Finding the Fourth Proportional to 12,876.51, 19,322.89 and 5,480.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,876.51 : 19,322.89 = 5,480.96 : x
2. Step 2: Convert to fraction form
   12,876.51/19,322.89 = 5,480.96/x
3. Step 3: Cross multiply
   12,876.51x = 19,322.89 × 5,480.96
4. Step 4: Simplify right side
   12,876.51x = 105,907,876.86
5. Step 5: Solve for x
   x = 105,907,876.86/12,876.51
6. Step 6: Final answer
   x = 8,224.89