Finding the Fourth Proportional to 28,155.81, 42,189.27 and 22,865.09

Step by Step Solution

1. Step 1: Write the proportion equation
   28,155.81 : 42,189.27 = 22,865.09 : x
2. Step 2: Convert to fraction form
   28,155.81/42,189.27 = 22,865.09/x
3. Step 3: Cross multiply
   28,155.81x = 42,189.27 × 22,865.09
4. Step 4: Simplify right side
   28,155.81x = 964,661,158.89
5. Step 5: Solve for x
   x = 964,661,158.89/28,155.81
6. Step 6: Final answer
   x = 34,261.53