Finding the Fourth Proportional to 16,428.34, 22,672.05 and 10,140.82

Step by Step Solution

1. Step 1: Write the proportion equation
   16,428.34 : 22,672.05 = 10,140.82 : x
2. Step 2: Convert to fraction form
   16,428.34/22,672.05 = 10,140.82/x
3. Step 3: Cross multiply
   16,428.34x = 22,672.05 × 10,140.82
4. Step 4: Simplify right side
   16,428.34x = 229,913,178.08
5. Step 5: Solve for x
   x = 229,913,178.08/16,428.34
6. Step 6: Final answer
   x = 13,994.91