Finding the Fourth Proportional to 8,978.95, 13,466.69 and 5,276.85

Step by Step Solution

1. Step 1: Write the proportion equation
   8,978.95 : 13,466.69 = 5,276.85 : x
2. Step 2: Convert to fraction form
   8,978.95/13,466.69 = 5,276.85/x
3. Step 3: Cross multiply
   8,978.95x = 13,466.69 × 5,276.85
4. Step 4: Simplify right side
   8,978.95x = 71,061,703.13
5. Step 5: Solve for x
   x = 71,061,703.13/8,978.95
6. Step 6: Final answer
   x = 7,914.26