Finding the Fourth Proportional to 9,978.69, 14,948.88 and 5,582.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,978.69 : 14,948.88 = 5,582.82 : x
2. Step 2: Convert to fraction form
   9,978.69/14,948.88 = 5,582.82/x
3. Step 3: Cross multiply
   9,978.69x = 14,948.88 × 5,582.82
4. Step 4: Simplify right side
   9,978.69x = 83,456,906.24
5. Step 5: Solve for x
   x = 83,456,906.24/9,978.69
6. Step 6: Final answer
   x = 8,363.51