Finding the Fourth Proportional to 16,891.91, 23,312.27 and 9,817.88

Step by Step Solution

1. Step 1: Write the proportion equation
   16,891.91 : 23,312.27 = 9,817.88 : x
2. Step 2: Convert to fraction form
   16,891.91/23,312.27 = 9,817.88/x
3. Step 3: Cross multiply
   16,891.91x = 23,312.27 × 9,817.88
4. Step 4: Simplify right side
   16,891.91x = 228,876,977.37
5. Step 5: Solve for x
   x = 228,876,977.37/16,891.91
6. Step 6: Final answer
   x = 13,549.50