Finding the Fourth Proportional to 22,909.60, 31,613.79 and 13,476.34

Step by Step Solution

1. Step 1: Write the proportion equation
   22,909.60 : 31,613.79 = 13,476.34 : x
2. Step 2: Convert to fraction form
   22,909.60/31,613.79 = 13,476.34/x
3. Step 3: Cross multiply
   22,909.60x = 31,613.79 × 13,476.34
4. Step 4: Simplify right side
   22,909.60x = 426,038,182.73
5. Step 5: Solve for x
   x = 426,038,182.73/22,909.60
6. Step 6: Final answer
   x = 18,596.49