Finding the Fourth Proportional to 10,109.10, 15,171.59 and 7,010.85

Step by Step Solution

1. Step 1: Write the proportion equation
   10,109.10 : 15,171.59 = 7,010.85 : x
2. Step 2: Convert to fraction form
   10,109.10/15,171.59 = 7,010.85/x
3. Step 3: Cross multiply
   10,109.10x = 15,171.59 × 7,010.85
4. Step 4: Simplify right side
   10,109.10x = 106,365,706.70
5. Step 5: Solve for x
   x = 106,365,706.70/10,109.10
6. Step 6: Final answer
   x = 10,521.78