Finding the Fourth Proportional to 9,978.60, 13,770.56 and 5,502.51

Step by Step Solution

1. Step 1: Write the proportion equation
   9,978.60 : 13,770.56 = 5,502.51 : x
2. Step 2: Convert to fraction form
   9,978.60/13,770.56 = 5,502.51/x
3. Step 3: Cross multiply
   9,978.60x = 13,770.56 × 5,502.51
4. Step 4: Simplify right side
   9,978.60x = 75,772,616.59
5. Step 5: Solve for x
   x = 75,772,616.59/9,978.60
6. Step 6: Final answer
   x = 7,593.51