Finding the Fourth Proportional to 22,639,443.09, 31,243,200.24 and 12,718,077.99

Step by Step Solution

1. Step 1: Write the proportion equation
   22,639,443.09 : 31,243,200.24 = 12,718,077.99 : x
2. Step 2: Convert to fraction form
   22,639,443.09/31,243,200.24 = 12,718,077.99/x
3. Step 3: Cross multiply
   22,639,443.09x = 31,243,200.24 × 12,718,077.99
4. Step 4: Simplify right side
   22,639,443.09x = 397,353,457,309,506.69
5. Step 5: Solve for x
   x = 397,353,457,309,506.69/22,639,443.09
6. Step 6: Final answer
   x = 17,551,379.50