Finding the Fourth Proportional to 5,405.50, 7,459.59 and 2,921.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,405.50 : 7,459.59 = 2,921.50 : x
2. Step 2: Convert to fraction form
   5,405.50/7,459.59 = 2,921.50/x
3. Step 3: Cross multiply
   5,405.50x = 7,459.59 × 2,921.50
4. Step 4: Simplify right side
   5,405.50x = 21,793,192.19
5. Step 5: Solve for x
   x = 21,793,192.19/5,405.50
6. Step 6: Final answer
   x = 4,031.67