Finding the Fourth Proportional to 13,021.39, 17,969.50 and 7,053.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,021.39 : 17,969.50 = 7,053.05 : x
2. Step 2: Convert to fraction form
   13,021.39/17,969.50 = 7,053.05/x
3. Step 3: Cross multiply
   13,021.39x = 17,969.50 × 7,053.05
4. Step 4: Simplify right side
   13,021.39x = 126,739,781.98
5. Step 5: Solve for x
   x = 126,739,781.98/13,021.39
6. Step 6: Final answer
   x = 9,733.20