Finding the Fourth Proportional to 14,078.08, 19,428.72 and 7,790.56

Step by Step Solution

1. Step 1: Write the proportion equation
   14,078.08 : 19,428.72 = 7,790.56 : x
2. Step 2: Convert to fraction form
   14,078.08/19,428.72 = 7,790.56/x
3. Step 3: Cross multiply
   14,078.08x = 19,428.72 × 7,790.56
4. Step 4: Simplify right side
   14,078.08x = 151,360,608.88
5. Step 5: Solve for x
   x = 151,360,608.88/14,078.08
6. Step 6: Final answer
   x = 10,751.51