Finding the Fourth Proportional to 12,877.76, 19,302.72 and 5,480.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,877.76 : 19,302.72 = 5,480.96 : x
2. Step 2: Convert to fraction form
   12,877.76/19,302.72 = 5,480.96/x
3. Step 3: Cross multiply
   12,877.76x = 19,302.72 × 5,480.96
4. Step 4: Simplify right side
   12,877.76x = 105,797,436.21
5. Step 5: Solve for x
   x = 105,797,436.21/12,877.76
6. Step 6: Final answer
   x = 8,215.52