Finding the Fourth Proportional to 9,111.60, 13,659.30 and 5,993.10

Step by Step Solution

1. Step 1: Write the proportion equation
   9,111.60 : 13,659.30 = 5,993.10 : x
2. Step 2: Convert to fraction form
   9,111.60/13,659.30 = 5,993.10/x
3. Step 3: Cross multiply
   9,111.60x = 13,659.30 × 5,993.10
4. Step 4: Simplify right side
   9,111.60x = 81,861,550.83
5. Step 5: Solve for x
   x = 81,861,550.83/9,111.60
6. Step 6: Final answer
   x = 8,984.32