Finding the Fourth Proportional to 9,189.29, 12,688.37 and 7,061.47

Step by Step Solution

1. Step 1: Write the proportion equation
   9,189.29 : 12,688.37 = 7,061.47 : x
2. Step 2: Convert to fraction form
   9,189.29/12,688.37 = 7,061.47/x
3. Step 3: Cross multiply
   9,189.29x = 12,688.37 × 7,061.47
4. Step 4: Simplify right side
   9,189.29x = 89,598,544.10
5. Step 5: Solve for x
   x = 89,598,544.10/9,189.29
6. Step 6: Final answer
   x = 9,750.32