Finding the Fourth Proportional to 23,430.72, 32,333.04 and 12,820.56

Step by Step Solution

1. Step 1: Write the proportion equation
   23,430.72 : 32,333.04 = 12,820.56 : x
2. Step 2: Convert to fraction form
   23,430.72/32,333.04 = 12,820.56/x
3. Step 3: Cross multiply
   23,430.72x = 32,333.04 × 12,820.56
4. Step 4: Simplify right side
   23,430.72x = 414,527,679.30
5. Step 5: Solve for x
   x = 414,527,679.30/23,430.72
6. Step 6: Final answer
   x = 17,691.63