Finding the Fourth Proportional to 10,456.56, 15,647.42 and 9,055.83

Step by Step Solution

1. Step 1: Write the proportion equation
   10,456.56 : 15,647.42 = 9,055.83 : x
2. Step 2: Convert to fraction form
   10,456.56/15,647.42 = 9,055.83/x
3. Step 3: Cross multiply
   10,456.56x = 15,647.42 × 9,055.83
4. Step 4: Simplify right side
   10,456.56x = 141,700,330.18
5. Step 5: Solve for x
   x = 141,700,330.18/10,456.56
6. Step 6: Final answer
   x = 13,551.33