Finding the Fourth Proportional to 12,916.98, 17,832.69 and 12,126.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,916.98 : 17,832.69 = 12,126.42 : x
2. Step 2: Convert to fraction form
   12,916.98/17,832.69 = 12,126.42/x
3. Step 3: Cross multiply
   12,916.98x = 17,832.69 × 12,126.42
4. Step 4: Simplify right side
   12,916.98x = 216,246,688.67
5. Step 5: Solve for x
   x = 216,246,688.67/12,916.98
6. Step 6: Final answer
   x = 16,741.27