Finding the Fourth Proportional to 10,488.07, 15,699.52 and 7,839.96

Step by Step Solution

1. Step 1: Write the proportion equation
   10,488.07 : 15,699.52 = 7,839.96 : x
2. Step 2: Convert to fraction form
   10,488.07/15,699.52 = 7,839.96/x
3. Step 3: Cross multiply
   10,488.07x = 15,699.52 × 7,839.96
4. Step 4: Simplify right side
   10,488.07x = 123,083,608.82
5. Step 5: Solve for x
   x = 123,083,608.82/10,488.07
6. Step 6: Final answer
   x = 11,735.58