Finding the Fourth Proportional to 11,415.99, 17,123.91 and 5,870.88

Step by Step Solution

1. Step 1: Write the proportion equation
   11,415.99 : 17,123.91 = 5,870.88 : x
2. Step 2: Convert to fraction form
   11,415.99/17,123.91 = 5,870.88/x
3. Step 3: Cross multiply
   11,415.99x = 17,123.91 × 5,870.88
4. Step 4: Simplify right side
   11,415.99x = 100,532,398.73
5. Step 5: Solve for x
   x = 100,532,398.73/11,415.99
6. Step 6: Final answer
   x = 8,806.28