Finding the Fourth Proportional to 17,709.60, 24,426.88 and 15,038.56

Step by Step Solution

1. Step 1: Write the proportion equation
   17,709.60 : 24,426.88 = 15,038.56 : x
2. Step 2: Convert to fraction form
   17,709.60/24,426.88 = 15,038.56/x
3. Step 3: Cross multiply
   17,709.60x = 24,426.88 × 15,038.56
4. Step 4: Simplify right side
   17,709.60x = 367,345,100.49
5. Step 5: Solve for x
   x = 367,345,100.49/17,709.60
6. Step 6: Final answer
   x = 20,742.71