Finding the Fourth Proportional to 12,457.17, 18,648.45 and 12,014.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,457.17 : 18,648.45 = 12,014.10 : x
2. Step 2: Convert to fraction form
   12,457.17/18,648.45 = 12,014.10/x
3. Step 3: Cross multiply
   12,457.17x = 18,648.45 × 12,014.10
4. Step 4: Simplify right side
   12,457.17x = 224,044,343.15
5. Step 5: Solve for x
   x = 224,044,343.15/12,457.17
6. Step 6: Final answer
   x = 17,985.17