Finding the Fourth Proportional to 10,105.56, 15,143.76 and 4,254.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,105.56 : 15,143.76 = 4,254.12 : x
2. Step 2: Convert to fraction form
   10,105.56/15,143.76 = 4,254.12/x
3. Step 3: Cross multiply
   10,105.56x = 15,143.76 × 4,254.12
4. Step 4: Simplify right side
   10,105.56x = 64,423,372.29
5. Step 5: Solve for x
   x = 64,423,372.29/10,105.56
6. Step 6: Final answer
   x = 6,375.04