Finding the Fourth Proportional to 12,801.37, 17,665.03 and 8,021.19

Step by Step Solution

1. Step 1: Write the proportion equation
   12,801.37 : 17,665.03 = 8,021.19 : x
2. Step 2: Convert to fraction form
   12,801.37/17,665.03 = 8,021.19/x
3. Step 3: Cross multiply
   12,801.37x = 17,665.03 × 8,021.19
4. Step 4: Simplify right side
   12,801.37x = 141,694,561.99
5. Step 5: Solve for x
   x = 141,694,561.99/12,801.37
6. Step 6: Final answer
   x = 11,068.70