Finding the Fourth Proportional to 8,739.84, 12,064.32 and 5,598.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,739.84 : 12,064.32 = 5,598.72 : x
2. Step 2: Convert to fraction form
   8,739.84/12,064.32 = 5,598.72/x
3. Step 3: Cross multiply
   8,739.84x = 12,064.32 × 5,598.72
4. Step 4: Simplify right side
   8,739.84x = 67,544,749.67
5. Step 5: Solve for x
   x = 67,544,749.67/8,739.84
6. Step 6: Final answer
   x = 7,728.37