Finding the Fourth Proportional to 15,662.32, 21,613.98 and 8,588.74

Step by Step Solution

1. Step 1: Write the proportion equation
   15,662.32 : 21,613.98 = 8,588.74 : x
2. Step 2: Convert to fraction form
   15,662.32/21,613.98 = 8,588.74/x
3. Step 3: Cross multiply
   15,662.32x = 21,613.98 × 8,588.74
4. Step 4: Simplify right side
   15,662.32x = 185,636,854.59
5. Step 5: Solve for x
   x = 185,636,854.59/15,662.32
6. Step 6: Final answer
   x = 11,852.45