Finding the Fourth Proportional to 23,189.03, 34,789.70 and 8,402.18

Step by Step Solution

1. Step 1: Write the proportion equation
   23,189.03 : 34,789.70 = 8,402.18 : x
2. Step 2: Convert to fraction form
   23,189.03/34,789.70 = 8,402.18/x
3. Step 3: Cross multiply
   23,189.03x = 34,789.70 × 8,402.18
4. Step 4: Simplify right side
   23,189.03x = 292,309,364.30
5. Step 5: Solve for x
   x = 292,309,364.30/23,189.03
6. Step 6: Final answer
   x = 12,605.50