Finding the Fourth Proportional to 12,980.90, 17,913.72 and 7,606.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,980.90 : 17,913.72 = 7,606.52 : x
2. Step 2: Convert to fraction form
   12,980.90/17,913.72 = 7,606.52/x
3. Step 3: Cross multiply
   12,980.90x = 17,913.72 × 7,606.52
4. Step 4: Simplify right side
   12,980.90x = 136,260,979.89
5. Step 5: Solve for x
   x = 136,260,979.89/12,980.90
6. Step 6: Final answer
   x = 10,497.04