Finding the Fourth Proportional to 8,111.80, 12,140.70 and 5,884.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,111.80 : 12,140.70 = 5,884.30 : x
2. Step 2: Convert to fraction form
   8,111.80/12,140.70 = 5,884.30/x
3. Step 3: Cross multiply
   8,111.80x = 12,140.70 × 5,884.30
4. Step 4: Simplify right side
   8,111.80x = 71,439,521.01
5. Step 5: Solve for x
   x = 71,439,521.01/8,111.80
6. Step 6: Final answer
   x = 8,806.86