Finding the Fourth Proportional to 9,783.72, 13,478.72 and 8,004.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,783.72 : 13,478.72 = 8,004.96 : x
2. Step 2: Convert to fraction form
   9,783.72/13,478.72 = 8,004.96/x
3. Step 3: Cross multiply
   9,783.72x = 13,478.72 × 8,004.96
4. Step 4: Simplify right side
   9,783.72x = 107,896,614.45
5. Step 5: Solve for x
   x = 107,896,614.45/9,783.72
6. Step 6: Final answer
   x = 11,028.18