Finding the Fourth Proportional to 30,822.50, 42,536.58 and 18,886.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,822.50 : 42,536.58 = 18,886.50 : x
2. Step 2: Convert to fraction form
   30,822.50/42,536.58 = 18,886.50/x
3. Step 3: Cross multiply
   30,822.50x = 42,536.58 × 18,886.50
4. Step 4: Simplify right side
   30,822.50x = 803,367,118.17
5. Step 5: Solve for x
   x = 803,367,118.17/30,822.50
6. Step 6: Final answer
   x = 26,064.31