Finding the Fourth Proportional to 10,813.61, 16,188.81 and 9,776.00

Step by Step Solution

1. Step 1: Write the proportion equation
   10,813.61 : 16,188.81 = 9,776.00 : x
2. Step 2: Convert to fraction form
   10,813.61/16,188.81 = 9,776.00/x
3. Step 3: Cross multiply
   10,813.61x = 16,188.81 × 9,776.00
4. Step 4: Simplify right side
   10,813.61x = 158,261,725.62
5. Step 5: Solve for x
   x = 158,261,725.62/10,813.61
6. Step 6: Final answer
   x = 14,635.43