Finding the Fourth Proportional to 21,065.06, 29,073.03 and 13,003.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,065.06 : 29,073.03 = 13,003.42 : x
2. Step 2: Convert to fraction form
   21,065.06/29,073.03 = 13,003.42/x
3. Step 3: Cross multiply
   21,065.06x = 29,073.03 × 13,003.42
4. Step 4: Simplify right side
   21,065.06x = 378,048,819.76
5. Step 5: Solve for x
   x = 378,048,819.76/21,065.06
6. Step 6: Final answer
   x = 17,946.72