Finding the Fourth Proportional to 9,953.56, 13,735.98 and 5,477.60

Step by Step Solution

1. Step 1: Write the proportion equation
   9,953.56 : 13,735.98 = 5,477.60 : x
2. Step 2: Convert to fraction form
   9,953.56/13,735.98 = 5,477.60/x
3. Step 3: Cross multiply
   9,953.56x = 13,735.98 × 5,477.60
4. Step 4: Simplify right side
   9,953.56x = 75,240,204.05
5. Step 5: Solve for x
   x = 75,240,204.05/9,953.56
6. Step 6: Final answer
   x = 7,559.12