Finding the Fourth Proportional to 9,783.72, 13,502.70 and 5,592.78

Step by Step Solution

1. Step 1: Write the proportion equation
   9,783.72 : 13,502.70 = 5,592.78 : x
2. Step 2: Convert to fraction form
   9,783.72/13,502.70 = 5,592.78/x
3. Step 3: Cross multiply
   9,783.72x = 13,502.70 × 5,592.78
4. Step 4: Simplify right side
   9,783.72x = 75,517,630.51
5. Step 5: Solve for x
   x = 75,517,630.51/9,783.72
6. Step 6: Final answer
   x = 7,718.70