Finding the Fourth Proportional to 12,300.55, 18,448.84 and 3,533.47

Step by Step Solution

1. Step 1: Write the proportion equation
   12,300.55 : 18,448.84 = 3,533.47 : x
2. Step 2: Convert to fraction form
   12,300.55/18,448.84 = 3,533.47/x
3. Step 3: Cross multiply
   12,300.55x = 18,448.84 × 3,533.47
4. Step 4: Simplify right side
   12,300.55x = 65,188,422.67
5. Step 5: Solve for x
   x = 65,188,422.67/12,300.55
6. Step 6: Final answer
   x = 5,299.63