Finding the Fourth Proportional to 9,978.71, 14,963.73 and 5,297.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,978.71 : 14,963.73 = 5,297.69 : x
2. Step 2: Convert to fraction form
   9,978.71/14,963.73 = 5,297.69/x
3. Step 3: Cross multiply
   9,978.71x = 14,963.73 × 5,297.69
4. Step 4: Simplify right side
   9,978.71x = 79,273,220.33
5. Step 5: Solve for x
   x = 79,273,220.33/9,978.71
6. Step 6: Final answer
   x = 7,944.24