Finding the Fourth Proportional to 5,587.50, 7,725.15 and 5,342.70

Step by Step Solution

1. Step 1: Write the proportion equation
   5,587.50 : 7,725.15 = 5,342.70 : x
2. Step 2: Convert to fraction form
   5,587.50/7,725.15 = 5,342.70/x
3. Step 3: Cross multiply
   5,587.50x = 7,725.15 × 5,342.70
4. Step 4: Simplify right side
   5,587.50x = 41,273,158.91
5. Step 5: Solve for x
   x = 41,273,158.91/5,587.50
6. Step 6: Final answer
   x = 7,386.70