Finding the Fourth Proportional to 10,064.76, 15,100.20 and 3,139.32

Step by Step Solution

1. Step 1: Write the proportion equation
   10,064.76 : 15,100.20 = 3,139.32 : x
2. Step 2: Convert to fraction form
   10,064.76/15,100.20 = 3,139.32/x
3. Step 3: Cross multiply
   10,064.76x = 15,100.20 × 3,139.32
4. Step 4: Simplify right side
   10,064.76x = 47,404,359.86
5. Step 5: Solve for x
   x = 47,404,359.86/10,064.76
6. Step 6: Final answer
   x = 4,709.93