Finding the Fourth Proportional to 8,505.33, 12,758.00 and 3,312.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,505.33 : 12,758.00 = 3,312.42 : x
2. Step 2: Convert to fraction form
   8,505.33/12,758.00 = 3,312.42/x
3. Step 3: Cross multiply
   8,505.33x = 12,758.00 × 3,312.42
4. Step 4: Simplify right side
   8,505.33x = 42,259,837.80
5. Step 5: Solve for x
   x = 42,259,837.80/8,505.33
6. Step 6: Final answer
   x = 4,968.63