Finding the Fourth Proportional to 14,078.91, 19,428.90 and 7,705.52

Step by Step Solution

1. Step 1: Write the proportion equation
   14,078.91 : 19,428.90 = 7,705.52 : x
2. Step 2: Convert to fraction form
   14,078.91/19,428.90 = 7,705.52/x
3. Step 3: Cross multiply
   14,078.91x = 19,428.90 × 7,705.52
4. Step 4: Simplify right side
   14,078.91x = 149,709,767.69
5. Step 5: Solve for x
   x = 149,709,767.69/14,078.91
6. Step 6: Final answer
   x = 10,633.62