Finding the Fourth Proportional to 7,755.76, 10,712.56 and 5,627.88

Step by Step Solution

1. Step 1: Write the proportion equation
   7,755.76 : 10,712.56 = 5,627.88 : x
2. Step 2: Convert to fraction form
   7,755.76/10,712.56 = 5,627.88/x
3. Step 3: Cross multiply
   7,755.76x = 10,712.56 × 5,627.88
4. Step 4: Simplify right side
   7,755.76x = 60,289,002.17
5. Step 5: Solve for x
   x = 60,289,002.17/7,755.76
6. Step 6: Final answer
   x = 7,773.45