Finding the Fourth Proportional to 10,973.82, 15,139.80 and 7,199.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,973.82 : 15,139.80 = 7,199.09 : x
2. Step 2: Convert to fraction form
   10,973.82/15,139.80 = 7,199.09/x
3. Step 3: Cross multiply
   10,973.82x = 15,139.80 × 7,199.09
4. Step 4: Simplify right side
   10,973.82x = 108,992,763.86
5. Step 5: Solve for x
   x = 108,992,763.86/10,973.82
6. Step 6: Final answer
   x = 9,932.07