Finding the Fourth Proportional to 9,348.57, 12,901.05 and 5,811.77

Step by Step Solution

1. Step 1: Write the proportion equation
   9,348.57 : 12,901.05 = 5,811.77 : x
2. Step 2: Convert to fraction form
   9,348.57/12,901.05 = 5,811.77/x
3. Step 3: Cross multiply
   9,348.57x = 12,901.05 × 5,811.77
4. Step 4: Simplify right side
   9,348.57x = 74,977,870.85
5. Step 5: Solve for x
   x = 74,977,870.85/9,348.57
6. Step 6: Final answer
   x = 8,020.25