Finding the Fourth Proportional to 11,857.57, 17,792.42 and 5,288.06

Step by Step Solution

1. Step 1: Write the proportion equation
   11,857.57 : 17,792.42 = 5,288.06 : x
2. Step 2: Convert to fraction form
   11,857.57/17,792.42 = 5,288.06/x
3. Step 3: Cross multiply
   11,857.57x = 17,792.42 × 5,288.06
4. Step 4: Simplify right side
   11,857.57x = 94,087,384.51
5. Step 5: Solve for x
   x = 94,087,384.51/11,857.57
6. Step 6: Final answer
   x = 7,934.79