Finding the Fourth Proportional to 30,885.63, 42,575.00 and 18,926.79

Step by Step Solution

1. Step 1: Write the proportion equation
   30,885.63 : 42,575.00 = 18,926.79 : x
2. Step 2: Convert to fraction form
   30,885.63/42,575.00 = 18,926.79/x
3. Step 3: Cross multiply
   30,885.63x = 42,575.00 × 18,926.79
4. Step 4: Simplify right side
   30,885.63x = 805,807,989.62
5. Step 5: Solve for x
   x = 805,807,989.62/30,885.63
6. Step 6: Final answer
   x = 26,090.06