Finding the Fourth Proportional to 13,752.38, 18,978.72 and 7,783.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,752.38 : 18,978.72 = 7,783.94 : x
2. Step 2: Convert to fraction form
   13,752.38/18,978.72 = 7,783.94/x
3. Step 3: Cross multiply
   13,752.38x = 18,978.72 × 7,783.94
4. Step 4: Simplify right side
   13,752.38x = 147,729,217.76
5. Step 5: Solve for x
   x = 147,729,217.76/13,752.38
6. Step 6: Final answer
   x = 10,742.08