Finding the Fourth Proportional to 11,707.34, 17,570.22 and 5,138.06

Step by Step Solution

1. Step 1: Write the proportion equation
   11,707.34 : 17,570.22 = 5,138.06 : x
2. Step 2: Convert to fraction form
   11,707.34/17,570.22 = 5,138.06/x
3. Step 3: Cross multiply
   11,707.34x = 17,570.22 × 5,138.06
4. Step 4: Simplify right side
   11,707.34x = 90,276,844.57
5. Step 5: Solve for x
   x = 90,276,844.57/11,707.34
6. Step 6: Final answer
   x = 7,711.13