Finding the Fourth Proportional to 8,178.01, 11,276.72 and 5,520.81

Step by Step Solution

1. Step 1: Write the proportion equation
   8,178.01 : 11,276.72 = 5,520.81 : x
2. Step 2: Convert to fraction form
   8,178.01/11,276.72 = 5,520.81/x
3. Step 3: Cross multiply
   8,178.01x = 11,276.72 × 5,520.81
4. Step 4: Simplify right side
   8,178.01x = 62,256,600.50
5. Step 5: Solve for x
   x = 62,256,600.50/8,178.01
6. Step 6: Final answer
   x = 7,612.68