Finding the Fourth Proportional to 5,418.72, 8,142.48 and 5,068.80

Step by Step Solution

1. Step 1: Write the proportion equation
   5,418.72 : 8,142.48 = 5,068.80 : x
2. Step 2: Convert to fraction form
   5,418.72/8,142.48 = 5,068.80/x
3. Step 3: Cross multiply
   5,418.72x = 8,142.48 × 5,068.80
4. Step 4: Simplify right side
   5,418.72x = 41,272,602.62
5. Step 5: Solve for x
   x = 41,272,602.62/5,418.72
6. Step 6: Final answer
   x = 7,616.67