Finding the Fourth Proportional to 11,900.45, 17,838.29 and 3,997.10

Step by Step Solution

1. Step 1: Write the proportion equation
   11,900.45 : 17,838.29 = 3,997.10 : x
2. Step 2: Convert to fraction form
   11,900.45/17,838.29 = 3,997.10/x
3. Step 3: Cross multiply
   11,900.45x = 17,838.29 × 3,997.10
4. Step 4: Simplify right side
   11,900.45x = 71,301,319.78
5. Step 5: Solve for x
   x = 71,301,319.78/11,900.45
6. Step 6: Final answer
   x = 5,991.48