Finding the Fourth Proportional to 9,340.47, 12,851.21 and 7,089.23

Step by Step Solution

1. Step 1: Write the proportion equation
   9,340.47 : 12,851.21 = 7,089.23 : x
2. Step 2: Convert to fraction form
   9,340.47/12,851.21 = 7,089.23/x
3. Step 3: Cross multiply
   9,340.47x = 12,851.21 × 7,089.23
4. Step 4: Simplify right side
   9,340.47x = 91,105,083.77
5. Step 5: Solve for x
   x = 91,105,083.77/9,340.47
6. Step 6: Final answer
   x = 9,753.80