Finding the Fourth Proportional to 21,119.33, 31,686.03 and 7,080.75

Step by Step Solution

1. Step 1: Write the proportion equation
   21,119.33 : 31,686.03 = 7,080.75 : x
2. Step 2: Convert to fraction form
   21,119.33/31,686.03 = 7,080.75/x
3. Step 3: Cross multiply
   21,119.33x = 31,686.03 × 7,080.75
4. Step 4: Simplify right side
   21,119.33x = 224,360,856.92
5. Step 5: Solve for x
   x = 224,360,856.92/21,119.33
6. Step 6: Final answer
   x = 10,623.49