Finding the Fourth Proportional to 22,509.12, 31,061.76 and 12,437.36

Step by Step Solution

1. Step 1: Write the proportion equation
   22,509.12 : 31,061.76 = 12,437.36 : x
2. Step 2: Convert to fraction form
   22,509.12/31,061.76 = 12,437.36/x
3. Step 3: Cross multiply
   22,509.12x = 31,061.76 × 12,437.36
4. Step 4: Simplify right side
   22,509.12x = 386,326,136.04
5. Step 5: Solve for x
   x = 386,326,136.04/22,509.12
6. Step 6: Final answer
   x = 17,163.09