Finding the Fourth Proportional to 9,714.28, 13,405.68 and 5,522.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,714.28 : 13,405.68 = 5,522.50 : x
2. Step 2: Convert to fraction form
   9,714.28/13,405.68 = 5,522.50/x
3. Step 3: Cross multiply
   9,714.28x = 13,405.68 × 5,522.50
4. Step 4: Simplify right side
   9,714.28x = 74,032,867.80
5. Step 5: Solve for x
   x = 74,032,867.80/9,714.28
6. Step 6: Final answer
   x = 7,621.03