Finding the Fourth Proportional to 7,065.89, 9,750.54 and 3,921.89

Step by Step Solution

1. Step 1: Write the proportion equation
   7,065.89 : 9,750.54 = 3,921.89 : x
2. Step 2: Convert to fraction form
   7,065.89/9,750.54 = 3,921.89/x
3. Step 3: Cross multiply
   7,065.89x = 9,750.54 × 3,921.89
4. Step 4: Simplify right side
   7,065.89x = 38,240,545.32
5. Step 5: Solve for x
   x = 38,240,545.32/7,065.89
6. Step 6: Final answer
   x = 5,411.99