Finding the Fourth Proportional to 39,150.72, 54,026.72 and 21,923.10

Step by Step Solution

1. Step 1: Write the proportion equation
   39,150.72 : 54,026.72 = 21,923.10 : x
2. Step 2: Convert to fraction form
   39,150.72/54,026.72 = 21,923.10/x
3. Step 3: Cross multiply
   39,150.72x = 54,026.72 × 21,923.10
4. Step 4: Simplify right side
   39,150.72x = 1,184,433,185.23
5. Step 5: Solve for x
   x = 1,184,433,185.23/39,150.72
6. Step 6: Final answer
   x = 30,253.16