Finding the Fourth Proportional to 8,892.66, 12,271.86 and 4,913.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,892.66 : 12,271.86 = 4,913.78 : x
2. Step 2: Convert to fraction form
   8,892.66/12,271.86 = 4,913.78/x
3. Step 3: Cross multiply
   8,892.66x = 12,271.86 × 4,913.78
4. Step 4: Simplify right side
   8,892.66x = 60,301,158.87
5. Step 5: Solve for x
   x = 60,301,158.87/8,892.66
6. Step 6: Final answer
   x = 6,781.00