Finding the Fourth Proportional to 9,320.58, 12,861.81 and 5,782.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,320.58 : 12,861.81 = 5,782.50 : x
2. Step 2: Convert to fraction form
   9,320.58/12,861.81 = 5,782.50/x
3. Step 3: Cross multiply
   9,320.58x = 12,861.81 × 5,782.50
4. Step 4: Simplify right side
   9,320.58x = 74,373,416.33
5. Step 5: Solve for x
   x = 74,373,416.33/9,320.58
6. Step 6: Final answer
   x = 7,979.48