Finding the Fourth Proportional to 8,964.72, 12,372.12 and 5,427.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,964.72 : 12,372.12 = 5,427.72 : x
2. Step 2: Convert to fraction form
   8,964.72/12,372.12 = 5,427.72/x
3. Step 3: Cross multiply
   8,964.72x = 12,372.12 × 5,427.72
4. Step 4: Simplify right side
   8,964.72x = 67,152,403.17
5. Step 5: Solve for x
   x = 67,152,403.17/8,964.72
6. Step 6: Final answer
   x = 7,490.74