Finding the Fourth Proportional to 10,570.40, 14,594.32 and 9,447.76

Step by Step Solution

1. Step 1: Write the proportion equation
   10,570.40 : 14,594.32 = 9,447.76 : x
2. Step 2: Convert to fraction form
   10,570.40/14,594.32 = 9,447.76/x
3. Step 3: Cross multiply
   10,570.40x = 14,594.32 × 9,447.76
4. Step 4: Simplify right side
   10,570.40x = 137,883,632.72
5. Step 5: Solve for x
   x = 137,883,632.72/10,570.40
6. Step 6: Final answer
   x = 13,044.32