Finding the Fourth Proportional to 23,137.47, 31,929.72 and 12,527.11

Step by Step Solution

1. Step 1: Write the proportion equation
   23,137.47 : 31,929.72 = 12,527.11 : x
2. Step 2: Convert to fraction form
   23,137.47/31,929.72 = 12,527.11/x
3. Step 3: Cross multiply
   23,137.47x = 31,929.72 × 12,527.11
4. Step 4: Simplify right side
   23,137.47x = 399,987,114.71
5. Step 5: Solve for x
   x = 399,987,114.71/23,137.47
6. Step 6: Final answer
   x = 17,287.42