Finding the Fourth Proportional to 9,981.91, 13,776.32 and 8,300.43

Step by Step Solution

1. Step 1: Write the proportion equation
   9,981.91 : 13,776.32 = 8,300.43 : x
2. Step 2: Convert to fraction form
   9,981.91/13,776.32 = 8,300.43/x
3. Step 3: Cross multiply
   9,981.91x = 13,776.32 × 8,300.43
4. Step 4: Simplify right side
   9,981.91x = 114,349,379.82
5. Step 5: Solve for x
   x = 114,349,379.82/9,981.91
6. Step 6: Final answer
   x = 11,455.66