Finding the Fourth Proportional to 10,458.74, 15,691.62 and 3,885.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,458.74 : 15,691.62 = 3,885.50 : x
2. Step 2: Convert to fraction form
   10,458.74/15,691.62 = 3,885.50/x
3. Step 3: Cross multiply
   10,458.74x = 15,691.62 × 3,885.50
4. Step 4: Simplify right side
   10,458.74x = 60,969,789.51
5. Step 5: Solve for x
   x = 60,969,789.51/10,458.74
6. Step 6: Final answer
   x = 5,829.55