Finding the Fourth Proportional to 12,321.63, 18,483.56 and 3,437.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,321.63 : 18,483.56 = 3,437.55 : x
2. Step 2: Convert to fraction form
   12,321.63/18,483.56 = 3,437.55/x
3. Step 3: Cross multiply
   12,321.63x = 18,483.56 × 3,437.55
4. Step 4: Simplify right side
   12,321.63x = 63,538,144.49
5. Step 5: Solve for x
   x = 63,538,144.49/12,321.63
6. Step 6: Final answer
   x = 5,156.63