Finding the Fourth Proportional to 38,164.56, 52,665.81 and 21,168.72

Step by Step Solution

1. Step 1: Write the proportion equation
   38,164.56 : 52,665.81 = 21,168.72 : x
2. Step 2: Convert to fraction form
   38,164.56/52,665.81 = 21,168.72/x
3. Step 3: Cross multiply
   38,164.56x = 52,665.81 × 21,168.72
4. Step 4: Simplify right side
   38,164.56x = 1,114,867,785.46
5. Step 5: Solve for x
   x = 1,114,867,785.46/38,164.56
6. Step 6: Final answer
   x = 29,212.12