Finding the Fourth Proportional to 8,759.70, 12,088.62 and 5,404.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,759.70 : 12,088.62 = 5,404.50 : x
2. Step 2: Convert to fraction form
   8,759.70/12,088.62 = 5,404.50/x
3. Step 3: Cross multiply
   8,759.70x = 12,088.62 × 5,404.50
4. Step 4: Simplify right side
   8,759.70x = 65,332,946.79
5. Step 5: Solve for x
   x = 65,332,946.79/8,759.70
6. Step 6: Final answer
   x = 7,458.35