Finding the Fourth Proportional to 9,410.78, 12,986.92 and 5,432.06

Step by Step Solution

1. Step 1: Write the proportion equation
   9,410.78 : 12,986.92 = 5,432.06 : x
2. Step 2: Convert to fraction form
   9,410.78/12,986.92 = 5,432.06/x
3. Step 3: Cross multiply
   9,410.78x = 12,986.92 × 5,432.06
4. Step 4: Simplify right side
   9,410.78x = 70,545,728.66
5. Step 5: Solve for x
   x = 70,545,728.66/9,410.78
6. Step 6: Final answer
   x = 7,496.27