Finding the Fourth Proportional to 12,981.93, 17,894.01 and 10,144.35

Step by Step Solution

1. Step 1: Write the proportion equation
   12,981.93 : 17,894.01 = 10,144.35 : x
2. Step 2: Convert to fraction form
   12,981.93/17,894.01 = 10,144.35/x
3. Step 3: Cross multiply
   12,981.93x = 17,894.01 × 10,144.35
4. Step 4: Simplify right side
   12,981.93x = 181,523,100.34
5. Step 5: Solve for x
   x = 181,523,100.34/12,981.93
6. Step 6: Final answer
   x = 13,982.75