Finding the Fourth Proportional to 9,978.03, 13,769.78 and 5,501.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,978.03 : 13,769.78 = 5,501.94 : x
2. Step 2: Convert to fraction form
   9,978.03/13,769.78 = 5,501.94/x
3. Step 3: Cross multiply
   9,978.03x = 13,769.78 × 5,501.94
4. Step 4: Simplify right side
   9,978.03x = 75,760,501.68
5. Step 5: Solve for x
   x = 75,760,501.68/9,978.03
6. Step 6: Final answer
   x = 7,592.73