Finding the Fourth Proportional to 21,064.56, 29,072.34 and 13,002.92

Step by Step Solution

1. Step 1: Write the proportion equation
   21,064.56 : 29,072.34 = 13,002.92 : x
2. Step 2: Convert to fraction form
   21,064.56/29,072.34 = 13,002.92/x
3. Step 3: Cross multiply
   21,064.56x = 29,072.34 × 13,002.92
4. Step 4: Simplify right side
   21,064.56x = 378,025,311.23
5. Step 5: Solve for x
   x = 378,025,311.23/21,064.56
6. Step 6: Final answer
   x = 17,946.03