Finding the Fourth Proportional to 9,747.80, 13,450.56 and 5,555.96

Step by Step Solution

1. Step 1: Write the proportion equation
   9,747.80 : 13,450.56 = 5,555.96 : x
2. Step 2: Convert to fraction form
   9,747.80/13,450.56 = 5,555.96/x
3. Step 3: Cross multiply
   9,747.80x = 13,450.56 × 5,555.96
4. Step 4: Simplify right side
   9,747.80x = 74,730,773.34
5. Step 5: Solve for x
   x = 74,730,773.34/9,747.80
6. Step 6: Final answer
   x = 7,666.42