Finding the Fourth Proportional to 9,988.27, 14,966.86 and 5,817.98

Step by Step Solution

1. Step 1: Write the proportion equation
   9,988.27 : 14,966.86 = 5,817.98 : x
2. Step 2: Convert to fraction form
   9,988.27/14,966.86 = 5,817.98/x
3. Step 3: Cross multiply
   9,988.27x = 14,966.86 × 5,817.98
4. Step 4: Simplify right side
   9,988.27x = 87,076,892.14
5. Step 5: Solve for x
   x = 87,076,892.14/9,988.27
6. Step 6: Final answer
   x = 8,717.92