Finding the Fourth Proportional to 16,693.84, 23,038.14 and 9,139.69

Step by Step Solution

1. Step 1: Write the proportion equation
   16,693.84 : 23,038.14 = 9,139.69 : x
2. Step 2: Convert to fraction form
   16,693.84/23,038.14 = 9,139.69/x
3. Step 3: Cross multiply
   16,693.84x = 23,038.14 × 9,139.69
4. Step 4: Simplify right side
   16,693.84x = 210,561,457.78
5. Step 5: Solve for x
   x = 210,561,457.78/16,693.84
6. Step 6: Final answer
   x = 12,613.12