Finding the Fourth Proportional to 10,783.72, 14,863.62 and 7,420.84

Step by Step Solution

1. Step 1: Write the proportion equation
   10,783.72 : 14,863.62 = 7,420.84 : x
2. Step 2: Convert to fraction form
   10,783.72/14,863.62 = 7,420.84/x
3. Step 3: Cross multiply
   10,783.72x = 14,863.62 × 7,420.84
4. Step 4: Simplify right side
   10,783.72x = 110,300,545.84
5. Step 5: Solve for x
   x = 110,300,545.84/10,783.72
6. Step 6: Final answer
   x = 10,228.43