Finding the Fourth Proportional to 10,787.42, 16,167.49 and 4,858

Step by Step Solution

1. Step 1: Write the proportion equation
   10,787.42 : 16,167.49 = 4,858 : x
2. Step 2: Convert to fraction form
   10,787.42/16,167.49 = 4,858/x
3. Step 3: Cross multiply
   10,787.42x = 16,167.49 × 4,858
4. Step 4: Simplify right side
   10,787.42x = 78,541,666.42
5. Step 5: Solve for x
   x = 78,541,666.42/10,787.42
6. Step 6: Final answer
   x = 7,280.86