Finding the Fourth Proportional to 12,106.88, 16,709.04 and 7,390.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,106.88 : 16,709.04 = 7,390.16 : x
2. Step 2: Convert to fraction form
   12,106.88/16,709.04 = 7,390.16/x
3. Step 3: Cross multiply
   12,106.88x = 16,709.04 × 7,390.16
4. Step 4: Simplify right side
   12,106.88x = 123,482,479.05
5. Step 5: Solve for x
   x = 123,482,479.05/12,106.88
6. Step 6: Final answer
   x = 10,199.36