Finding the Fourth Proportional to 8,748.45, 13,117.86 and 5,978.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,748.45 : 13,117.86 = 5,978.25 : x
2. Step 2: Convert to fraction form
   8,748.45/13,117.86 = 5,978.25/x
3. Step 3: Cross multiply
   8,748.45x = 13,117.86 × 5,978.25
4. Step 4: Simplify right side
   8,748.45x = 78,421,846.55
5. Step 5: Solve for x
   x = 78,421,846.55/8,748.45
6. Step 6: Final answer
   x = 8,964.08