Finding the Fourth Proportional to 8,280.42, 11,434.29 and 5,634.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,280.42 : 11,434.29 = 5,634.15 : x
2. Step 2: Convert to fraction form
   8,280.42/11,434.29 = 5,634.15/x
3. Step 3: Cross multiply
   8,280.42x = 11,434.29 × 5,634.15
4. Step 4: Simplify right side
   8,280.42x = 64,422,505.00
5. Step 5: Solve for x
   x = 64,422,505.00/8,280.42
6. Step 6: Final answer
   x = 7,780.10