Finding the Fourth Proportional to 10,404.28, 15,592.92 and 7,930

Step by Step Solution

1. Step 1: Write the proportion equation
   10,404.28 : 15,592.92 = 7,930 : x
2. Step 2: Convert to fraction form
   10,404.28/15,592.92 = 7,930/x
3. Step 3: Cross multiply
   10,404.28x = 15,592.92 × 7,930
4. Step 4: Simplify right side
   10,404.28x = 123,651,855.60
5. Step 5: Solve for x
   x = 123,651,855.60/10,404.28
6. Step 6: Final answer
   x = 11,884.71