Finding the Fourth Proportional to 8,880.77, 12,259.89 and 5,524.65

Step by Step Solution

1. Step 1: Write the proportion equation
   8,880.77 : 12,259.89 = 5,524.65 : x
2. Step 2: Convert to fraction form
   8,880.77/12,259.89 = 5,524.65/x
3. Step 3: Cross multiply
   8,880.77x = 12,259.89 × 5,524.65
4. Step 4: Simplify right side
   8,880.77x = 67,731,601.29
5. Step 5: Solve for x
   x = 67,731,601.29/8,880.77
6. Step 6: Final answer
   x = 7,626.77