Finding the Fourth Proportional to 12,619.72, 17,414.10 and 7,312.84

Step by Step Solution

1. Step 1: Write the proportion equation
   12,619.72 : 17,414.10 = 7,312.84 : x
2. Step 2: Convert to fraction form
   12,619.72/17,414.10 = 7,312.84/x
3. Step 3: Cross multiply
   12,619.72x = 17,414.10 × 7,312.84
4. Step 4: Simplify right side
   12,619.72x = 127,346,527.04
5. Step 5: Solve for x
   x = 127,346,527.04/12,619.72
6. Step 6: Final answer
   x = 10,091.07