Finding the Fourth Proportional to 12,980.10, 17,912.61 and 7,314.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,980.10 : 17,912.61 = 7,314.94 : x
2. Step 2: Convert to fraction form
   12,980.10/17,912.61 = 7,314.94/x
3. Step 3: Cross multiply
   12,980.10x = 17,912.61 × 7,314.94
4. Step 4: Simplify right side
   12,980.10x = 131,029,575.31
5. Step 5: Solve for x
   x = 131,029,575.31/12,980.10
6. Step 6: Final answer
   x = 10,094.65