Finding the Fourth Proportional to 12,980.83, 19,506.43 and 7,062.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,980.83 : 19,506.43 = 7,062.09 : x
2. Step 2: Convert to fraction form
   12,980.83/19,506.43 = 7,062.09/x
3. Step 3: Cross multiply
   12,980.83x = 19,506.43 × 7,062.09
4. Step 4: Simplify right side
   12,980.83x = 137,756,164.24
5. Step 5: Solve for x
   x = 137,756,164.24/12,980.83
6. Step 6: Final answer
   x = 10,612.28