Finding the Fourth Proportional to 10,789.31, 16,160.48 and 5,230.89

Step by Step Solution

1. Step 1: Write the proportion equation
   10,789.31 : 16,160.48 = 5,230.89 : x
2. Step 2: Convert to fraction form
   10,789.31/16,160.48 = 5,230.89/x
3. Step 3: Cross multiply
   10,789.31x = 16,160.48 × 5,230.89
4. Step 4: Simplify right side
   10,789.31x = 84,533,686.69
5. Step 5: Solve for x
   x = 84,533,686.69/10,789.31
6. Step 6: Final answer
   x = 7,834.95