Finding the Fourth Proportional to 9,078.86, 12,526.61 and 5,299.87

Step by Step Solution

1. Step 1: Write the proportion equation
   9,078.86 : 12,526.61 = 5,299.87 : x
2. Step 2: Convert to fraction form
   9,078.86/12,526.61 = 5,299.87/x
3. Step 3: Cross multiply
   9,078.86x = 12,526.61 × 5,299.87
4. Step 4: Simplify right side
   9,078.86x = 66,389,366.60
5. Step 5: Solve for x
   x = 66,389,366.60/9,078.86
6. Step 6: Final answer
   x = 7,312.53