Finding the Fourth Proportional to 13,029.59, 17,980.99 and 7,061.31

Step by Step Solution

1. Step 1: Write the proportion equation
   13,029.59 : 17,980.99 = 7,061.31 : x
2. Step 2: Convert to fraction form
   13,029.59/17,980.99 = 7,061.31/x
3. Step 3: Cross multiply
   13,029.59x = 17,980.99 × 7,061.31
4. Step 4: Simplify right side
   13,029.59x = 126,969,326.84
5. Step 5: Solve for x
   x = 126,969,326.84/13,029.59
6. Step 6: Final answer
   x = 9,744.69