Finding the Fourth Proportional to 9,869.54, 13,620.01 and 5,393.30

Step by Step Solution

1. Step 1: Write the proportion equation
   9,869.54 : 13,620.01 = 5,393.30 : x
2. Step 2: Convert to fraction form
   9,869.54/13,620.01 = 5,393.30/x
3. Step 3: Cross multiply
   9,869.54x = 13,620.01 × 5,393.30
4. Step 4: Simplify right side
   9,869.54x = 73,456,711.61
5. Step 5: Solve for x
   x = 73,456,711.61/9,869.54
6. Step 6: Final answer
   x = 7,442.77