Finding the Fourth Proportional to 5,589.60, 7,719.15 and 5,064.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,589.60 : 7,719.15 = 5,064.72 : x
2. Step 2: Convert to fraction form
   5,589.60/7,719.15 = 5,064.72/x
3. Step 3: Cross multiply
   5,589.60x = 7,719.15 × 5,064.72
4. Step 4: Simplify right side
   5,589.60x = 39,095,333.39
5. Step 5: Solve for x
   x = 39,095,333.39/5,589.60
6. Step 6: Final answer
   x = 6,994.30