Finding the Fourth Proportional to 11,558.42, 17,347.35 and 4,989.59

Step by Step Solution

1. Step 1: Write the proportion equation
   11,558.42 : 17,347.35 = 4,989.59 : x
2. Step 2: Convert to fraction form
   11,558.42/17,347.35 = 4,989.59/x
3. Step 3: Cross multiply
   11,558.42x = 17,347.35 × 4,989.59
4. Step 4: Simplify right side
   11,558.42x = 86,556,164.09
5. Step 5: Solve for x
   x = 86,556,164.09/11,558.42
6. Step 6: Final answer
   x = 7,488.58