Finding the Fourth Proportional to 8,756.24, 12,081.56 and 4,978.53

Step by Step Solution

1. Step 1: Write the proportion equation
   8,756.24 : 12,081.56 = 4,978.53 : x
2. Step 2: Convert to fraction form
   8,756.24/12,081.56 = 4,978.53/x
3. Step 3: Cross multiply
   8,756.24x = 12,081.56 × 4,978.53
4. Step 4: Simplify right side
   8,756.24x = 60,148,384.01
5. Step 5: Solve for x
   x = 60,148,384.01/8,756.24
6. Step 6: Final answer
   x = 6,869.21