Finding the Fourth Proportional to 9,823.39, 13,555.78 and 5,346.99

Step by Step Solution

1. Step 1: Write the proportion equation
   9,823.39 : 13,555.78 = 5,346.99 : x
2. Step 2: Convert to fraction form
   9,823.39/13,555.78 = 5,346.99/x
3. Step 3: Cross multiply
   9,823.39x = 13,555.78 × 5,346.99
4. Step 4: Simplify right side
   9,823.39x = 72,482,620.10
5. Step 5: Solve for x
   x = 72,482,620.10/9,823.39
6. Step 6: Final answer
   x = 7,378.58