Finding the Fourth Proportional to 9,840.87, 13,580.55 and 5,592.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,840.87 : 13,580.55 = 5,592.15 : x
2. Step 2: Convert to fraction form
   9,840.87/13,580.55 = 5,592.15/x
3. Step 3: Cross multiply
   9,840.87x = 13,580.55 × 5,592.15
4. Step 4: Simplify right side
   9,840.87x = 75,944,472.68
5. Step 5: Solve for x
   x = 75,944,472.68/9,840.87
6. Step 6: Final answer
   x = 7,717.25