Finding the Fourth Proportional to 9,749.92, 13,455.12 and 5,558.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,749.92 : 13,455.12 = 5,558.56 : x
2. Step 2: Convert to fraction form
   9,749.92/13,455.12 = 5,558.56/x
3. Step 3: Cross multiply
   9,749.92x = 13,455.12 × 5,558.56
4. Step 4: Simplify right side
   9,749.92x = 74,791,091.83
5. Step 5: Solve for x
   x = 74,791,091.83/9,749.92
6. Step 6: Final answer
   x = 7,670.94