Finding the Fourth Proportional to 23,923.31, 33,015.08 and 13,312.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,923.31 : 33,015.08 = 13,312.72 : x
2. Step 2: Convert to fraction form
   23,923.31/33,015.08 = 13,312.72/x
3. Step 3: Cross multiply
   23,923.31x = 33,015.08 × 13,312.72
4. Step 4: Simplify right side
   23,923.31x = 439,520,515.82
5. Step 5: Solve for x
   x = 439,520,515.82/23,923.31
6. Step 6: Final answer
   x = 18,372.06