Finding the Fourth Proportional to 10,158.89, 15,236.79 and 3,921.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,158.89 : 15,236.79 = 3,921.86 : x
2. Step 2: Convert to fraction form
   10,158.89/15,236.79 = 3,921.86/x
3. Step 3: Cross multiply
   10,158.89x = 15,236.79 × 3,921.86
4. Step 4: Simplify right side
   10,158.89x = 59,756,557.23
5. Step 5: Solve for x
   x = 59,756,557.23/10,158.89
6. Step 6: Final answer
   x = 5,882.19