Finding the Fourth Proportional to 10,785.34, 14,851.10 and 9,209.98

Step by Step Solution

1. Step 1: Write the proportion equation
   10,785.34 : 14,851.10 = 9,209.98 : x
2. Step 2: Convert to fraction form
   10,785.34/14,851.10 = 9,209.98/x
3. Step 3: Cross multiply
   10,785.34x = 14,851.10 × 9,209.98
4. Step 4: Simplify right side
   10,785.34x = 136,778,333.98
5. Step 5: Solve for x
   x = 136,778,333.98/10,785.34
6. Step 6: Final answer
   x = 12,681.88