Finding the Fourth Proportional to 21,055.30, 29,021.69 and 14,925.06

Step by Step Solution

1. Step 1: Write the proportion equation
   21,055.30 : 29,021.69 = 14,925.06 : x
2. Step 2: Convert to fraction form
   21,055.30/29,021.69 = 14,925.06/x
3. Step 3: Cross multiply
   21,055.30x = 29,021.69 × 14,925.06
4. Step 4: Simplify right side
   21,055.30x = 433,150,446.93
5. Step 5: Solve for x
   x = 433,150,446.93/21,055.30
6. Step 6: Final answer
   x = 20,572.04