Finding the Fourth Proportional to 11,613.82, 16,018.86 and 7,140.08

Step by Step Solution

1. Step 1: Write the proportion equation
   11,613.82 : 16,018.86 = 7,140.08 : x
2. Step 2: Convert to fraction form
   11,613.82/16,018.86 = 7,140.08/x
3. Step 3: Cross multiply
   11,613.82x = 16,018.86 × 7,140.08
4. Step 4: Simplify right side
   11,613.82x = 114,375,941.91
5. Step 5: Solve for x
   x = 114,375,941.91/11,613.82
6. Step 6: Final answer
   x = 9,848.27