Finding the Fourth Proportional to 9,976.82, 14,911.11 and 9,188.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,976.82 : 14,911.11 = 9,188.69 : x
2. Step 2: Convert to fraction form
   9,976.82/14,911.11 = 9,188.69/x
3. Step 3: Cross multiply
   9,976.82x = 14,911.11 × 9,188.69
4. Step 4: Simplify right side
   9,976.82x = 137,013,492.79
5. Step 5: Solve for x
   x = 137,013,492.79/9,976.82
6. Step 6: Final answer
   x = 13,733.19