Finding the Fourth Proportional to 13,210,434,142.12, 18,230,402,091.82 and 7,269,986,644.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,210,434,142.12 : 18,230,402,091.82 = 7,269,986,644.12 : x
2. Step 2: Convert to fraction form
   13,210,434,142.12/18,230,402,091.82 = 7,269,986,644.12/x
3. Step 3: Cross multiply
   13,210,434,142.12x = 18,230,402,091.82 × 7,269,986,644.12
4. Step 4: Simplify right side
   13,210,434,142.12x = 132,534,779,724,468,699,136
5. Step 5: Solve for x
   x = 132,534,779,724,468,699,136/13,210,434,142.12
6. Step 6: Final answer
   x = 10,032,583,206.47