Finding the Fourth Proportional to 22,609, 31,200.80 and 12,537.87

Step by Step Solution

1. Step 1: Write the proportion equation
   22,609 : 31,200.80 = 12,537.87 : x
2. Step 2: Convert to fraction form
   22,609/31,200.80 = 12,537.87/x
3. Step 3: Cross multiply
   22,609x = 31,200.80 × 12,537.87
4. Step 4: Simplify right side
   22,609x = 391,191,574.30
5. Step 5: Solve for x
   x = 391,191,574.30/22,609
6. Step 6: Final answer
   x = 17,302.47