Finding the Fourth Proportional to 11,707.74, 17,558.96 and 3,385.91

Step by Step Solution

1. Step 1: Write the proportion equation
   11,707.74 : 17,558.96 = 3,385.91 : x
2. Step 2: Convert to fraction form
   11,707.74/17,558.96 = 3,385.91/x
3. Step 3: Cross multiply
   11,707.74x = 17,558.96 × 3,385.91
4. Step 4: Simplify right side
   11,707.74x = 59,452,953.53
5. Step 5: Solve for x
   x = 59,452,953.53/11,707.74
6. Step 6: Final answer
   x = 5,078.09