Finding the Fourth Proportional to 13,771.55, 19,004.37 and 7,803.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,771.55 : 19,004.37 = 7,803.78 : x
2. Step 2: Convert to fraction form
   13,771.55/19,004.37 = 7,803.78/x
3. Step 3: Cross multiply
   13,771.55x = 19,004.37 × 7,803.78
4. Step 4: Simplify right side
   13,771.55x = 148,305,922.52
5. Step 5: Solve for x
   x = 148,305,922.52/13,771.55
6. Step 6: Final answer
   x = 10,769.01