Finding the Fourth Proportional to 11,790.01, 17,680.96 and 3,997

Step by Step Solution

1. Step 1: Write the proportion equation
   11,790.01 : 17,680.96 = 3,997 : x
2. Step 2: Convert to fraction form
   11,790.01/17,680.96 = 3,997/x
3. Step 3: Cross multiply
   11,790.01x = 17,680.96 × 3,997
4. Step 4: Simplify right side
   11,790.01x = 70,670,797.12
5. Step 5: Solve for x
   x = 70,670,797.12/11,790.01
6. Step 6: Final answer
   x = 5,994.13