Finding the Fourth Proportional to 11,458.80, 17,189.98 and 4,885

Step by Step Solution

1. Step 1: Write the proportion equation
   11,458.80 : 17,189.98 = 4,885 : x
2. Step 2: Convert to fraction form
   11,458.80/17,189.98 = 4,885/x
3. Step 3: Cross multiply
   11,458.80x = 17,189.98 × 4,885
4. Step 4: Simplify right side
   11,458.80x = 83,973,052.30
5. Step 5: Solve for x
   x = 83,973,052.30/11,458.80
6. Step 6: Final answer
   x = 7,328.26