Finding the Fourth Proportional to 12,980.07, 17,912.56 and 7,314.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,980.07 : 17,912.56 = 7,314.89 : x
2. Step 2: Convert to fraction form
   12,980.07/17,912.56 = 7,314.89/x
3. Step 3: Cross multiply
   12,980.07x = 17,912.56 × 7,314.89
4. Step 4: Simplify right side
   12,980.07x = 131,028,344.00
5. Step 5: Solve for x
   x = 131,028,344.00/12,980.07
6. Step 6: Final answer
   x = 10,094.58