Finding the Fourth Proportional to 10,176.79, 15,265.05 and 2,781.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,176.79 : 15,265.05 = 2,781.10 : x
2. Step 2: Convert to fraction form
   10,176.79/15,265.05 = 2,781.10/x
3. Step 3: Cross multiply
   10,176.79x = 15,265.05 × 2,781.10
4. Step 4: Simplify right side
   10,176.79x = 42,453,630.56
5. Step 5: Solve for x
   x = 42,453,630.56/10,176.79
6. Step 6: Final answer
   x = 4,171.61