Finding the Fourth Proportional to 10,488.34, 15,726.23 and 7,115.27

Step by Step Solution

1. Step 1: Write the proportion equation
   10,488.34 : 15,726.23 = 7,115.27 : x
2. Step 2: Convert to fraction form
   10,488.34/15,726.23 = 7,115.27/x
3. Step 3: Cross multiply
   10,488.34x = 15,726.23 × 7,115.27
4. Step 4: Simplify right side
   10,488.34x = 111,896,376.27
5. Step 5: Solve for x
   x = 111,896,376.27/10,488.34
6. Step 6: Final answer
   x = 10,668.65