Finding the Fourth Proportional to 9,789.46, 13,503.31 and 5,807.75

Step by Step Solution

1. Step 1: Write the proportion equation
   9,789.46 : 13,503.31 = 5,807.75 : x
2. Step 2: Convert to fraction form
   9,789.46/13,503.31 = 5,807.75/x
3. Step 3: Cross multiply
   9,789.46x = 13,503.31 × 5,807.75
4. Step 4: Simplify right side
   9,789.46x = 78,423,819.61
5. Step 5: Solve for x
   x = 78,423,819.61/9,789.46
6. Step 6: Final answer
   x = 8,011.05