Finding the Fourth Proportional to 22,699,349.69, 31,325,858.60 and 12,386,638.67

Step by Step Solution

1. Step 1: Write the proportion equation
   22,699,349.69 : 31,325,858.60 = 12,386,638.67 : x
2. Step 2: Convert to fraction form
   22,699,349.69/31,325,858.60 = 12,386,638.67/x
3. Step 3: Cross multiply
   22,699,349.69x = 31,325,858.60 × 12,386,638.67
4. Step 4: Simplify right side
   22,699,349.69x = 388,022,091,287,149.56
5. Step 5: Solve for x
   x = 388,022,091,287,149.56/22,699,349.69
6. Step 6: Final answer
   x = 17,093,973.91