Finding the Fourth Proportional to 38,828.37, 58,271.49 and 28,856.10

Step by Step Solution

1. Step 1: Write the proportion equation
   38,828.37 : 58,271.49 = 28,856.10 : x
2. Step 2: Convert to fraction form
   38,828.37/58,271.49 = 28,856.10/x
3. Step 3: Cross multiply
   38,828.37x = 58,271.49 × 28,856.10
4. Step 4: Simplify right side
   38,828.37x = 1,681,487,942.59
5. Step 5: Solve for x
   x = 1,681,487,942.59/38,828.37
6. Step 6: Final answer
   x = 43,305.65