Finding the Fourth Proportional to 9,779.84, 14,671.20 and 3,540.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,779.84 : 14,671.20 = 3,540.32 : x
2. Step 2: Convert to fraction form
   9,779.84/14,671.20 = 3,540.32/x
3. Step 3: Cross multiply
   9,779.84x = 14,671.20 × 3,540.32
4. Step 4: Simplify right side
   9,779.84x = 51,940,742.78
5. Step 5: Solve for x
   x = 51,940,742.78/9,779.84
6. Step 6: Final answer
   x = 5,311.00