Finding the Fourth Proportional to 12,613.32, 18,892.42 and 10,397.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,613.32 : 18,892.42 = 10,397.16 : x
2. Step 2: Convert to fraction form
   12,613.32/18,892.42 = 10,397.16/x
3. Step 3: Cross multiply
   12,613.32x = 18,892.42 × 10,397.16
4. Step 4: Simplify right side
   12,613.32x = 196,427,513.53
5. Step 5: Solve for x
   x = 196,427,513.53/12,613.32
6. Step 6: Final answer
   x = 15,573.02