Finding the Fourth Proportional to 10,081.74, 15,120.17 and 3,156.24

Step by Step Solution

1. Step 1: Write the proportion equation
   10,081.74 : 15,120.17 = 3,156.24 : x
2. Step 2: Convert to fraction form
   10,081.74/15,120.17 = 3,156.24/x
3. Step 3: Cross multiply
   10,081.74x = 15,120.17 × 3,156.24
4. Step 4: Simplify right side
   10,081.74x = 47,722,885.36
5. Step 5: Solve for x
   x = 47,722,885.36/10,081.74
6. Step 6: Final answer
   x = 4,733.60