Finding the Fourth Proportional to 11,618.06, 16,030.58 and 7,142.54

Step by Step Solution

1. Step 1: Write the proportion equation
   11,618.06 : 16,030.58 = 7,142.54 : x
2. Step 2: Convert to fraction form
   11,618.06/16,030.58 = 7,142.54/x
3. Step 3: Cross multiply
   11,618.06x = 16,030.58 × 7,142.54
4. Step 4: Simplify right side
   11,618.06x = 114,499,058.87
5. Step 5: Solve for x
   x = 114,499,058.87/11,618.06
6. Step 6: Final answer
   x = 9,855.26