Finding the Fourth Proportional to 8,898.42, 12,278.88 and 4,918.89

Step by Step Solution

1. Step 1: Write the proportion equation
   8,898.42 : 12,278.88 = 4,918.89 : x
2. Step 2: Convert to fraction form
   8,898.42/12,278.88 = 4,918.89/x
3. Step 3: Cross multiply
   8,898.42x = 12,278.88 × 4,918.89
4. Step 4: Simplify right side
   8,898.42x = 60,398,460.04
5. Step 5: Solve for x
   x = 60,398,460.04/8,898.42
6. Step 6: Final answer
   x = 6,787.55