Finding the Fourth Proportional to 8,773.76, 12,102.72 and 5,456

Step by Step Solution

1. Step 1: Write the proportion equation
   8,773.76 : 12,102.72 = 5,456 : x
2. Step 2: Convert to fraction form
   8,773.76/12,102.72 = 5,456/x
3. Step 3: Cross multiply
   8,773.76x = 12,102.72 × 5,456
4. Step 4: Simplify right side
   8,773.76x = 66,032,440.32
5. Step 5: Solve for x
   x = 66,032,440.32/8,773.76
6. Step 6: Final answer
   x = 7,526.13