Finding the Fourth Proportional to 12,020.40, 18,017.82 and 7,092.36

Step by Step Solution

1. Step 1: Write the proportion equation
   12,020.40 : 18,017.82 = 7,092.36 : x
2. Step 2: Convert to fraction form
   12,020.40/18,017.82 = 7,092.36/x
3. Step 3: Cross multiply
   12,020.40x = 18,017.82 × 7,092.36
4. Step 4: Simplify right side
   12,020.40x = 127,788,865.86
5. Step 5: Solve for x
   x = 127,788,865.86/12,020.40
6. Step 6: Final answer
   x = 10,631.00