Finding the Fourth Proportional to 11,491.17, 17,228.71 and 5,870.55

Step by Step Solution

1. Step 1: Write the proportion equation
   11,491.17 : 17,228.71 = 5,870.55 : x
2. Step 2: Convert to fraction form
   11,491.17/17,228.71 = 5,870.55/x
3. Step 3: Cross multiply
   11,491.17x = 17,228.71 × 5,870.55
4. Step 4: Simplify right side
   11,491.17x = 101,142,003.49
5. Step 5: Solve for x
   x = 101,142,003.49/11,491.17
6. Step 6: Final answer
   x = 8,801.72