Finding the Fourth Proportional to 9,978.05, 13,769.79 and 5,501.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,978.05 : 13,769.79 = 5,501.96 : x
2. Step 2: Convert to fraction form
   9,978.05/13,769.79 = 5,501.96/x
3. Step 3: Cross multiply
   9,978.05x = 13,769.79 × 5,501.96
4. Step 4: Simplify right side
   9,978.05x = 75,760,837.21
5. Step 5: Solve for x
   x = 75,760,837.21/9,978.05
6. Step 6: Final answer
   x = 7,592.75