Finding the Fourth Proportional to 5,103.52, 7,042.96 and 3,985.76

Step by Step Solution

1. Step 1: Write the proportion equation
   5,103.52 : 7,042.96 = 3,985.76 : x
2. Step 2: Convert to fraction form
   5,103.52/7,042.96 = 3,985.76/x
3. Step 3: Cross multiply
   5,103.52x = 7,042.96 × 3,985.76
4. Step 4: Simplify right side
   5,103.52x = 28,071,548.25
5. Step 5: Solve for x
   x = 28,071,548.25/5,103.52
6. Step 6: Final answer
   x = 5,500.43