Finding the Fourth Proportional to 9,895.50, 13,655.79 and 5,479.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,895.50 : 13,655.79 = 5,479.50 : x
2. Step 2: Convert to fraction form
   9,895.50/13,655.79 = 5,479.50/x
3. Step 3: Cross multiply
   9,895.50x = 13,655.79 × 5,479.50
4. Step 4: Simplify right side
   9,895.50x = 74,826,901.31
5. Step 5: Solve for x
   x = 74,826,901.31/9,895.50
6. Step 6: Final answer
   x = 7,561.71