Finding the Fourth Proportional to 10,560.65, 14,573.72 and 5,780.57

Step by Step Solution

1. Step 1: Write the proportion equation
   10,560.65 : 14,573.72 = 5,780.57 : x
2. Step 2: Convert to fraction form
   10,560.65/14,573.72 = 5,780.57/x
3. Step 3: Cross multiply
   10,560.65x = 14,573.72 × 5,780.57
4. Step 4: Simplify right side
   10,560.65x = 84,244,350.20
5. Step 5: Solve for x
   x = 84,244,350.20/10,560.65
6. Step 6: Final answer
   x = 7,977.20