Finding the Fourth Proportional to 15,613.40, 21,550.76 and 8,902.52

Step by Step Solution

1. Step 1: Write the proportion equation
   15,613.40 : 21,550.76 = 8,902.52 : x
2. Step 2: Convert to fraction form
   15,613.40/21,550.76 = 8,902.52/x
3. Step 3: Cross multiply
   15,613.40x = 21,550.76 × 8,902.52
4. Step 4: Simplify right side
   15,613.40x = 191,856,071.92
5. Step 5: Solve for x
   x = 191,856,071.92/15,613.40
6. Step 6: Final answer
   x = 12,287.91