Finding the Fourth Proportional to 11,808.17, 17,707.24 and 4,789.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,808.17 : 17,707.24 = 4,789.72 : x
2. Step 2: Convert to fraction form
   11,808.17/17,707.24 = 4,789.72/x
3. Step 3: Cross multiply
   11,808.17x = 17,707.24 × 4,789.72
4. Step 4: Simplify right side
   11,808.17x = 84,812,721.57
5. Step 5: Solve for x
   x = 84,812,721.57/11,808.17
6. Step 6: Final answer
   x = 7,182.55