Finding the Fourth Proportional to 10,379.13, 15,488.36 and 9,271.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,379.13 : 15,488.36 = 9,271.59 : x
2. Step 2: Convert to fraction form
   10,379.13/15,488.36 = 9,271.59/x
3. Step 3: Cross multiply
   10,379.13x = 15,488.36 × 9,271.59
4. Step 4: Simplify right side
   10,379.13x = 143,601,677.33
5. Step 5: Solve for x
   x = 143,601,677.33/10,379.13
6. Step 6: Final answer
   x = 13,835.62