Finding the Fourth Proportional to 12,109.68, 16,714.08 and 7,398.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,109.68 : 16,714.08 = 7,398.72 : x
2. Step 2: Convert to fraction form
   12,109.68/16,714.08 = 7,398.72/x
3. Step 3: Cross multiply
   12,109.68x = 16,714.08 × 7,398.72
4. Step 4: Simplify right side
   12,109.68x = 123,662,797.98
5. Step 5: Solve for x
   x = 123,662,797.98/12,109.68
6. Step 6: Final answer
   x = 10,211.90