Finding the Fourth Proportional to 16,948.12, 23,410.72 and 13,017.80

Step by Step Solution

1. Step 1: Write the proportion equation
   16,948.12 : 23,410.72 = 13,017.80 : x
2. Step 2: Convert to fraction form
   16,948.12/23,410.72 = 13,017.80/x
3. Step 3: Cross multiply
   16,948.12x = 23,410.72 × 13,017.80
4. Step 4: Simplify right side
   16,948.12x = 304,756,070.82
5. Step 5: Solve for x
   x = 304,756,070.82/16,948.12
6. Step 6: Final answer
   x = 17,981.70