Finding the Fourth Proportional to 9,823.21, 13,555.55 and 5,346.69

Step by Step Solution

1. Step 1: Write the proportion equation
   9,823.21 : 13,555.55 = 5,346.69 : x
2. Step 2: Convert to fraction form
   9,823.21/13,555.55 = 5,346.69/x
3. Step 3: Cross multiply
   9,823.21x = 13,555.55 × 5,346.69
4. Step 4: Simplify right side
   9,823.21x = 72,477,362.41
5. Step 5: Solve for x
   x = 72,477,362.41/9,823.21
6. Step 6: Final answer
   x = 7,378.18