Finding the Fourth Proportional to 11,859.74, 17,790.42 and 4,074.02

Step by Step Solution

1. Step 1: Write the proportion equation
   11,859.74 : 17,790.42 = 4,074.02 : x
2. Step 2: Convert to fraction form
   11,859.74/17,790.42 = 4,074.02/x
3. Step 3: Cross multiply
   11,859.74x = 17,790.42 × 4,074.02
4. Step 4: Simplify right side
   11,859.74x = 72,478,526.89
5. Step 5: Solve for x
   x = 72,478,526.89/11,859.74
6. Step 6: Final answer
   x = 6,111.31