Finding the Fourth Proportional to 10,470.56, 15,777.86 and 8,662.37

Step by Step Solution

1. Step 1: Write the proportion equation
   10,470.56 : 15,777.86 = 8,662.37 : x
2. Step 2: Convert to fraction form
   10,470.56/15,777.86 = 8,662.37/x
3. Step 3: Cross multiply
   10,470.56x = 15,777.86 × 8,662.37
4. Step 4: Simplify right side
   10,470.56x = 136,673,538.93
5. Step 5: Solve for x
   x = 136,673,538.93/10,470.56
6. Step 6: Final answer
   x = 13,053.13