Finding the Fourth Proportional to 12,908.02, 17,812.56 and 7,319.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,908.02 : 17,812.56 = 7,319.02 : x
2. Step 2: Convert to fraction form
   12,908.02/17,812.56 = 7,319.02/x
3. Step 3: Cross multiply
   12,908.02x = 17,812.56 × 7,319.02
4. Step 4: Simplify right side
   12,908.02x = 130,370,482.89
5. Step 5: Solve for x
   x = 130,370,482.89/12,908.02
6. Step 6: Final answer
   x = 10,099.96