Finding the Fourth Proportional to 5,901.57, 8,107.72 and 5,280.32

Step by Step Solution

1. Step 1: Write the proportion equation
   5,901.57 : 8,107.72 = 5,280.32 : x
2. Step 2: Convert to fraction form
   5,901.57/8,107.72 = 5,280.32/x
3. Step 3: Cross multiply
   5,901.57x = 8,107.72 × 5,280.32
4. Step 4: Simplify right side
   5,901.57x = 42,811,363.14
5. Step 5: Solve for x
   x = 42,811,363.14/5,901.57
6. Step 6: Final answer
   x = 7,254.23