Finding the Fourth Proportional to 9,978.93, 13,771.01 and 5,502.87

Step by Step Solution

1. Step 1: Write the proportion equation
   9,978.93 : 13,771.01 = 5,502.87 : x
2. Step 2: Convert to fraction form
   9,978.93/13,771.01 = 5,502.87/x
3. Step 3: Cross multiply
   9,978.93x = 13,771.01 × 5,502.87
4. Step 4: Simplify right side
   9,978.93x = 75,780,091.56
5. Step 5: Solve for x
   x = 75,780,091.56/9,978.93
6. Step 6: Final answer
   x = 7,594.01