Finding the Fourth Proportional to 30,725.76, 42,318.72 and 26,526.72

Step by Step Solution

1. Step 1: Write the proportion equation
   30,725.76 : 42,318.72 = 26,526.72 : x
2. Step 2: Convert to fraction form
   30,725.76/42,318.72 = 26,526.72/x
3. Step 3: Cross multiply
   30,725.76x = 42,318.72 × 26,526.72
4. Step 4: Simplify right side
   30,725.76x = 1,122,576,836.20
5. Step 5: Solve for x
   x = 1,122,576,836.20/30,725.76
6. Step 6: Final answer
   x = 36,535.36