Finding the Fourth Proportional to 13,077.38, 19,616.04 and 5,680.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,077.38 : 19,616.04 = 5,680.88 : x
2. Step 2: Convert to fraction form
   13,077.38/19,616.04 = 5,680.88/x
3. Step 3: Cross multiply
   13,077.38x = 19,616.04 × 5,680.88
4. Step 4: Simplify right side
   13,077.38x = 111,436,369.32
5. Step 5: Solve for x
   x = 111,436,369.32/13,077.38
6. Step 6: Final answer
   x = 8,521.31