Finding the Fourth Proportional to 11,707.72, 17,557.92 and 3,914.71

Step by Step Solution

1. Step 1: Write the proportion equation
   11,707.72 : 17,557.92 = 3,914.71 : x
2. Step 2: Convert to fraction form
   11,707.72/17,557.92 = 3,914.71/x
3. Step 3: Cross multiply
   11,707.72x = 17,557.92 × 3,914.71
4. Step 4: Simplify right side
   11,707.72x = 68,734,165.00
5. Step 5: Solve for x
   x = 68,734,165.00/11,707.72
6. Step 6: Final answer
   x = 5,870.84