Finding the Fourth Proportional to 13,774.15, 19,007.76 and 7,724.06

Step by Step Solution

1. Step 1: Write the proportion equation
   13,774.15 : 19,007.76 = 7,724.06 : x
2. Step 2: Convert to fraction form
   13,774.15/19,007.76 = 7,724.06/x
3. Step 3: Cross multiply
   13,774.15x = 19,007.76 × 7,724.06
4. Step 4: Simplify right side
   13,774.15x = 146,817,083.91
5. Step 5: Solve for x
   x = 146,817,083.91/13,774.15
6. Step 6: Final answer
   x = 10,658.88