Finding the Fourth Proportional to 22,663.72, 31,277.91 and 13,235.32

Step by Step Solution

1. Step 1: Write the proportion equation
   22,663.72 : 31,277.91 = 13,235.32 : x
2. Step 2: Convert to fraction form
   22,663.72/31,277.91 = 13,235.32/x
3. Step 3: Cross multiply
   22,663.72x = 31,277.91 × 13,235.32
4. Step 4: Simplify right side
   22,663.72x = 413,973,147.78
5. Step 5: Solve for x
   x = 413,973,147.78/22,663.72
6. Step 6: Final answer
   x = 18,265.90