Finding the Fourth Proportional to 14,389.64, 21,585.52 and 5,028.57

Step by Step Solution

1. Step 1: Write the proportion equation
   14,389.64 : 21,585.52 = 5,028.57 : x
2. Step 2: Convert to fraction form
   14,389.64/21,585.52 = 5,028.57/x
3. Step 3: Cross multiply
   14,389.64x = 21,585.52 × 5,028.57
4. Step 4: Simplify right side
   14,389.64x = 108,544,298.31
5. Step 5: Solve for x
   x = 108,544,298.31/14,389.64
6. Step 6: Final answer
   x = 7,543.23