Finding the Fourth Proportional to 13,752.45, 18,978.30 and 7,464.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,752.45 : 18,978.30 = 7,464.78 : x
2. Step 2: Convert to fraction form
   13,752.45/18,978.30 = 7,464.78/x
3. Step 3: Cross multiply
   13,752.45x = 18,978.30 × 7,464.78
4. Step 4: Simplify right side
   13,752.45x = 141,668,834.27
5. Step 5: Solve for x
   x = 141,668,834.27/13,752.45
6. Step 6: Final answer
   x = 10,301.35