Finding the Fourth Proportional to 12,979.83, 19,504.93 and 7,061.09

Step by Step Solution

1. Step 1: Write the proportion equation
   12,979.83 : 19,504.93 = 7,061.09 : x
2. Step 2: Convert to fraction form
   12,979.83/19,504.93 = 7,061.09/x
3. Step 3: Cross multiply
   12,979.83x = 19,504.93 × 7,061.09
4. Step 4: Simplify right side
   12,979.83x = 137,726,138.00
5. Step 5: Solve for x
   x = 137,726,138.00/12,979.83
6. Step 6: Final answer
   x = 10,610.78