Finding the Fourth Proportional to 16,212.52, 22,368.13 and 12,798.71

Step by Step Solution

1. Step 1: Write the proportion equation
   16,212.52 : 22,368.13 = 12,798.71 : x
2. Step 2: Convert to fraction form
   16,212.52/22,368.13 = 12,798.71/x
3. Step 3: Cross multiply
   16,212.52x = 22,368.13 × 12,798.71
4. Step 4: Simplify right side
   16,212.52x = 286,283,065.27
5. Step 5: Solve for x
   x = 286,283,065.27/16,212.52
6. Step 6: Final answer
   x = 17,658.15