Finding the Fourth Proportional to 8,955.30, 12,354.71 and 5,412.36

Step by Step Solution

1. Step 1: Write the proportion equation
   8,955.30 : 12,354.71 = 5,412.36 : x
2. Step 2: Convert to fraction form
   8,955.30/12,354.71 = 5,412.36/x
3. Step 3: Cross multiply
   8,955.30x = 12,354.71 × 5,412.36
4. Step 4: Simplify right side
   8,955.30x = 66,868,157.48
5. Step 5: Solve for x
   x = 66,868,157.48/8,955.30
6. Step 6: Final answer
   x = 7,466.88