Finding the Fourth Proportional to 8,978.31, 13,468.23 and 2,739.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,978.31 : 13,468.23 = 2,739.72 : x
2. Step 2: Convert to fraction form
   8,978.31/13,468.23 = 2,739.72/x
3. Step 3: Cross multiply
   8,978.31x = 13,468.23 × 2,739.72
4. Step 4: Simplify right side
   8,978.31x = 36,899,165.40
5. Step 5: Solve for x
   x = 36,899,165.40/8,978.31
6. Step 6: Final answer
   x = 4,109.81