Finding the Fourth Proportional to 38,238.72, 52,754.69 and 28,191.05

Step by Step Solution

1. Step 1: Write the proportion equation
   38,238.72 : 52,754.69 = 28,191.05 : x
2. Step 2: Convert to fraction form
   38,238.72/52,754.69 = 28,191.05/x
3. Step 3: Cross multiply
   38,238.72x = 52,754.69 × 28,191.05
4. Step 4: Simplify right side
   38,238.72x = 1,487,209,839.75
5. Step 5: Solve for x
   x = 1,487,209,839.75/38,238.72
6. Step 6: Final answer
   x = 38,892.78