Finding the Fourth Proportional to 11,150.58, 15,398.22 and 7,178.60

Step by Step Solution

1. Step 1: Write the proportion equation
   11,150.58 : 15,398.22 = 7,178.60 : x
2. Step 2: Convert to fraction form
   11,150.58/15,398.22 = 7,178.60/x
3. Step 3: Cross multiply
   11,150.58x = 15,398.22 × 7,178.60
4. Step 4: Simplify right side
   11,150.58x = 110,537,662.09
5. Step 5: Solve for x
   x = 110,537,662.09/11,150.58
6. Step 6: Final answer
   x = 9,913.18