Finding the Fourth Proportional to 10,431.18, 15,637.86 and 3,856.14

Step by Step Solution

1. Step 1: Write the proportion equation
   10,431.18 : 15,637.86 = 3,856.14 : x
2. Step 2: Convert to fraction form
   10,431.18/15,637.86 = 3,856.14/x
3. Step 3: Cross multiply
   10,431.18x = 15,637.86 × 3,856.14
4. Step 4: Simplify right side
   10,431.18x = 60,301,777.46
5. Step 5: Solve for x
   x = 60,301,777.46/10,431.18
6. Step 6: Final answer
   x = 5,780.92