Finding the Fourth Proportional to 9,719.30, 13,412.55 and 5,527.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,719.30 : 13,412.55 = 5,527.55 : x
2. Step 2: Convert to fraction form
   9,719.30/13,412.55 = 5,527.55/x
3. Step 3: Cross multiply
   9,719.30x = 13,412.55 × 5,527.55
4. Step 4: Simplify right side
   9,719.30x = 74,138,595.01
5. Step 5: Solve for x
   x = 74,138,595.01/9,719.30
6. Step 6: Final answer
   x = 7,627.97