Finding the Fourth Proportional to 22,457.31, 30,993.18 and 12,898.53

Step by Step Solution

1. Step 1: Write the proportion equation
   22,457.31 : 30,993.18 = 12,898.53 : x
2. Step 2: Convert to fraction form
   22,457.31/30,993.18 = 12,898.53/x
3. Step 3: Cross multiply
   22,457.31x = 30,993.18 × 12,898.53
4. Step 4: Simplify right side
   22,457.31x = 399,766,462.03
5. Step 5: Solve for x
   x = 399,766,462.03/22,457.31
6. Step 6: Final answer
   x = 17,801.17