Finding the Fourth Proportional to 10,656.27, 15,987.54 and 5,114.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,656.27 : 15,987.54 = 5,114.28 : x
2. Step 2: Convert to fraction form
   10,656.27/15,987.54 = 5,114.28/x
3. Step 3: Cross multiply
   10,656.27x = 15,987.54 × 5,114.28
4. Step 4: Simplify right side
   10,656.27x = 81,764,701.21
5. Step 5: Solve for x
   x = 81,764,701.21/10,656.27
6. Step 6: Final answer
   x = 7,672.92