Finding the Fourth Proportional to 16,426.84, 22,669.98 and 10,139.32

Step by Step Solution

1. Step 1: Write the proportion equation
   16,426.84 : 22,669.98 = 10,139.32 : x
2. Step 2: Convert to fraction form
   16,426.84/22,669.98 = 10,139.32/x
3. Step 3: Cross multiply
   16,426.84x = 22,669.98 × 10,139.32
4. Step 4: Simplify right side
   16,426.84x = 229,858,181.61
5. Step 5: Solve for x
   x = 229,858,181.61/16,426.84
6. Step 6: Final answer
   x = 13,992.84