Finding the Fourth Proportional to 8,892.78, 12,272.21 and 4,914.06

Step by Step Solution

1. Step 1: Write the proportion equation
   8,892.78 : 12,272.21 = 4,914.06 : x
2. Step 2: Convert to fraction form
   8,892.78/12,272.21 = 4,914.06/x
3. Step 3: Cross multiply
   8,892.78x = 12,272.21 × 4,914.06
4. Step 4: Simplify right side
   8,892.78x = 60,306,376.27
5. Step 5: Solve for x
   x = 60,306,376.27/8,892.78
6. Step 6: Final answer
   x = 6,781.50