Finding the Fourth Proportional to 13,210,434,146.12, 18,230,402,097.34 and 7,269,986,648.12

Step by Step Solution

1. Step 1: Write the proportion equation
   13,210,434,146.12 : 18,230,402,097.34 = 7,269,986,648.12 : x
2. Step 2: Convert to fraction form
   13,210,434,146.12/18,230,402,097.34 = 7,269,986,648.12/x
3. Step 3: Cross multiply
   13,210,434,146.12x = 18,230,402,097.34 × 7,269,986,648.12
4. Step 4: Simplify right side
   13,210,434,146.12x = 132,534,779,837,520,642,048
5. Step 5: Solve for x
   x = 132,534,779,837,520,642,048/13,210,434,146.12
6. Step 6: Final answer
   x = 10,032,583,211.99