Finding the Fourth Proportional to 16,885.42, 23,304.78 and 9,815.98

Step by Step Solution

1. Step 1: Write the proportion equation
   16,885.42 : 23,304.78 = 9,815.98 : x
2. Step 2: Convert to fraction form
   16,885.42/23,304.78 = 9,815.98/x
3. Step 3: Cross multiply
   16,885.42x = 23,304.78 × 9,815.98
4. Step 4: Simplify right side
   16,885.42x = 228,759,254.38
5. Step 5: Solve for x
   x = 228,759,254.38/16,885.42
6. Step 6: Final answer
   x = 13,547.74