Finding the Fourth Proportional to 17,377.83, 23,981.42 and 9,420.04

Step by Step Solution

1. Step 1: Write the proportion equation
   17,377.83 : 23,981.42 = 9,420.04 : x
2. Step 2: Convert to fraction form
   17,377.83/23,981.42 = 9,420.04/x
3. Step 3: Cross multiply
   17,377.83x = 23,981.42 × 9,420.04
4. Step 4: Simplify right side
   17,377.83x = 225,905,935.66
5. Step 5: Solve for x
   x = 225,905,935.66/17,377.83
6. Step 6: Final answer
   x = 12,999.66