Finding the Fourth Proportional to 22,507.65, 31,059.05 and 12,435.98

Step by Step Solution

1. Step 1: Write the proportion equation
   22,507.65 : 31,059.05 = 12,435.98 : x
2. Step 2: Convert to fraction form
   22,507.65/31,059.05 = 12,435.98/x
3. Step 3: Cross multiply
   22,507.65x = 31,059.05 × 12,435.98
4. Step 4: Simplify right side
   22,507.65x = 386,249,681.85
5. Step 5: Solve for x
   x = 386,249,681.85/22,507.65
6. Step 6: Final answer
   x = 17,160.82