Finding the Fourth Proportional to 31,820.96, 43,908.04 and 18,389.62

Step by Step Solution

1. Step 1: Write the proportion equation
   31,820.96 : 43,908.04 = 18,389.62 : x
2. Step 2: Convert to fraction form
   31,820.96/43,908.04 = 18,389.62/x
3. Step 3: Cross multiply
   31,820.96x = 43,908.04 × 18,389.62
4. Step 4: Simplify right side
   31,820.96x = 807,452,244.86
5. Step 5: Solve for x
   x = 807,452,244.86/31,820.96
6. Step 6: Final answer
   x = 25,374.86