Finding the Fourth Proportional to 9,719.61, 13,419.52 and 7,477.53

Step by Step Solution

1. Step 1: Write the proportion equation
   9,719.61 : 13,419.52 = 7,477.53 : x
2. Step 2: Convert to fraction form
   9,719.61/13,419.52 = 7,477.53/x
3. Step 3: Cross multiply
   9,719.61x = 13,419.52 × 7,477.53
4. Step 4: Simplify right side
   9,719.61x = 100,344,844.69
5. Step 5: Solve for x
   x = 100,344,844.69/9,719.61
6. Step 6: Final answer
   x = 10,323.96