Finding the Fourth Proportional to 13,021.91, 17,970.22 and 7,053.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,021.91 : 17,970.22 = 7,053.56 : x
2. Step 2: Convert to fraction form
   13,021.91/17,970.22 = 7,053.56/x
3. Step 3: Cross multiply
   13,021.91x = 17,970.22 × 7,053.56
4. Step 4: Simplify right side
   13,021.91x = 126,754,052.27
5. Step 5: Solve for x
   x = 126,754,052.27/13,021.91
6. Step 6: Final answer
   x = 9,733.91