Finding the Fourth Proportional to 9,484.70, 13,089.20 and 5,505.57

Step by Step Solution

1. Step 1: Write the proportion equation
   9,484.70 : 13,089.20 = 5,505.57 : x
2. Step 2: Convert to fraction form
   9,484.70/13,089.20 = 5,505.57/x
3. Step 3: Cross multiply
   9,484.70x = 13,089.20 × 5,505.57
4. Step 4: Simplify right side
   9,484.70x = 72,063,479.32
5. Step 5: Solve for x
   x = 72,063,479.32/9,484.70
6. Step 6: Final answer
   x = 7,597.87