Finding the Fourth Proportional to 5,807.52, 8,010.90 and 5,418.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,807.52 : 8,010.90 = 5,418.72 : x
2. Step 2: Convert to fraction form
   5,807.52/8,010.90 = 5,418.72/x
3. Step 3: Cross multiply
   5,807.52x = 8,010.90 × 5,418.72
4. Step 4: Simplify right side
   5,807.52x = 43,408,824.05
5. Step 5: Solve for x
   x = 43,408,824.05/5,807.52
6. Step 6: Final answer
   x = 7,474.59