Finding the Fourth Proportional to 9,985.97, 14,981.61 and 3,412.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,985.97 : 14,981.61 = 3,412.15 : x
2. Step 2: Convert to fraction form
   9,985.97/14,981.61 = 3,412.15/x
3. Step 3: Cross multiply
   9,985.97x = 14,981.61 × 3,412.15
4. Step 4: Simplify right side
   9,985.97x = 51,119,500.56
5. Step 5: Solve for x
   x = 51,119,500.56/9,985.97
6. Step 6: Final answer
   x = 5,119.13