Finding the Fourth Proportional to 14,142.32, 19,516.52 and 7,854.80

Step by Step Solution

1. Step 1: Write the proportion equation
   14,142.32 : 19,516.52 = 7,854.80 : x
2. Step 2: Convert to fraction form
   14,142.32/19,516.52 = 7,854.80/x
3. Step 3: Cross multiply
   14,142.32x = 19,516.52 × 7,854.80
4. Step 4: Simplify right side
   14,142.32x = 153,298,361.30
5. Step 5: Solve for x
   x = 153,298,361.30/14,142.32
6. Step 6: Final answer
   x = 10,839.69