Finding the Fourth Proportional to 8,113.78, 12,154.89 and 5,332.08

Step by Step Solution

1. Step 1: Write the proportion equation
   8,113.78 : 12,154.89 = 5,332.08 : x
2. Step 2: Convert to fraction form
   8,113.78/12,154.89 = 5,332.08/x
3. Step 3: Cross multiply
   8,113.78x = 12,154.89 × 5,332.08
4. Step 4: Simplify right side
   8,113.78x = 64,810,845.87
5. Step 5: Solve for x
   x = 64,810,845.87/8,113.78
6. Step 6: Final answer
   x = 7,987.75