Finding the Fourth Proportional to 13,077.72, 19,616.38 and 5,281

Step by Step Solution

1. Step 1: Write the proportion equation
   13,077.72 : 19,616.38 = 5,281 : x
2. Step 2: Convert to fraction form
   13,077.72/19,616.38 = 5,281/x
3. Step 3: Cross multiply
   13,077.72x = 19,616.38 × 5,281
4. Step 4: Simplify right side
   13,077.72x = 103,594,102.78
5. Step 5: Solve for x
   x = 103,594,102.78/13,077.72
6. Step 6: Final answer
   x = 7,921.42