Finding the Fourth Proportional to 22,581.86, 31,166.52 and 13,630.64

Step by Step Solution

1. Step 1: Write the proportion equation
   22,581.86 : 31,166.52 = 13,630.64 : x
2. Step 2: Convert to fraction form
   22,581.86/31,166.52 = 13,630.64/x
3. Step 3: Cross multiply
   22,581.86x = 31,166.52 × 13,630.64
4. Step 4: Simplify right side
   22,581.86x = 424,819,614.17
5. Step 5: Solve for x
   x = 424,819,614.17/22,581.86
6. Step 6: Final answer
   x = 18,812.43