Finding the Fourth Proportional to 30,823.50, 42,537.96 and 18,887.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,823.50 : 42,537.96 = 18,887.50 : x
2. Step 2: Convert to fraction form
   30,823.50/42,537.96 = 18,887.50/x
3. Step 3: Cross multiply
   30,823.50x = 42,537.96 × 18,887.50
4. Step 4: Simplify right side
   30,823.50x = 803,435,719.50
5. Step 5: Solve for x
   x = 803,435,719.50/30,823.50
6. Step 6: Final answer
   x = 26,065.69