Finding the Fourth Proportional to 10,118.18, 15,174.34 and 3,877.74

Step by Step Solution

1. Step 1: Write the proportion equation
   10,118.18 : 15,174.34 = 3,877.74 : x
2. Step 2: Convert to fraction form
   10,118.18/15,174.34 = 3,877.74/x
3. Step 3: Cross multiply
   10,118.18x = 15,174.34 × 3,877.74
4. Step 4: Simplify right side
   10,118.18x = 58,842,135.50
5. Step 5: Solve for x
   x = 58,842,135.50/10,118.18
6. Step 6: Final answer
   x = 5,815.48