Finding the Fourth Proportional to 16,213.34, 22,373.34 and 9,139.61

Step by Step Solution

1. Step 1: Write the proportion equation
   16,213.34 : 22,373.34 = 9,139.61 : x
2. Step 2: Convert to fraction form
   16,213.34/22,373.34 = 9,139.61/x
3. Step 3: Cross multiply
   16,213.34x = 22,373.34 × 9,139.61
4. Step 4: Simplify right side
   16,213.34x = 204,483,602.00
5. Step 5: Solve for x
   x = 204,483,602.00/16,213.34
6. Step 6: Final answer
   x = 12,612.06