Finding the Fourth Proportional to 8,748.26, 13,117.58 and 5,978.06

Step by Step Solution

1. Step 1: Write the proportion equation
   8,748.26 : 13,117.58 = 5,978.06 : x
2. Step 2: Convert to fraction form
   8,748.26/13,117.58 = 5,978.06/x
3. Step 3: Cross multiply
   8,748.26x = 13,117.58 × 5,978.06
4. Step 4: Simplify right side
   8,748.26x = 78,417,683.20
5. Step 5: Solve for x
   x = 78,417,683.20/8,748.26
6. Step 6: Final answer
   x = 8,963.80