Finding the Fourth Proportional to 13,200.67, 19,751.78 and 13,053.04

Step by Step Solution

1. Step 1: Write the proportion equation
   13,200.67 : 19,751.78 = 13,053.04 : x
2. Step 2: Convert to fraction form
   13,200.67/19,751.78 = 13,053.04/x
3. Step 3: Cross multiply
   13,200.67x = 19,751.78 × 13,053.04
4. Step 4: Simplify right side
   13,200.67x = 257,820,708.28
5. Step 5: Solve for x
   x = 257,820,708.28/13,200.67
6. Step 6: Final answer
   x = 19,530.89