Finding the Fourth Proportional to 9,700.63, 13,388.48 and 5,722.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,700.63 : 13,388.48 = 5,722.72 : x
2. Step 2: Convert to fraction form
   9,700.63/13,388.48 = 5,722.72/x
3. Step 3: Cross multiply
   9,700.63x = 13,388.48 × 5,722.72
4. Step 4: Simplify right side
   9,700.63x = 76,618,522.27
5. Step 5: Solve for x
   x = 76,618,522.27/9,700.63
6. Step 6: Final answer
   x = 7,898.30