Finding the Fourth Proportional to 5,548.31, 8,310.12 and 5,116.15

Step by Step Solution

1. Step 1: Write the proportion equation
   5,548.31 : 8,310.12 = 5,116.15 : x
2. Step 2: Convert to fraction form
   5,548.31/8,310.12 = 5,116.15/x
3. Step 3: Cross multiply
   5,548.31x = 8,310.12 × 5,116.15
4. Step 4: Simplify right side
   5,548.31x = 42,515,779.28
5. Step 5: Solve for x
   x = 42,515,779.28/5,548.31
6. Step 6: Final answer
   x = 7,662.84