Finding the Fourth Proportional to 12,402.62, 18,602.31 and 5,475.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,402.62 : 18,602.31 = 5,475.50 : x
2. Step 2: Convert to fraction form
   12,402.62/18,602.31 = 5,475.50/x
3. Step 3: Cross multiply
   12,402.62x = 18,602.31 × 5,475.50
4. Step 4: Simplify right side
   12,402.62x = 101,856,948.41
5. Step 5: Solve for x
   x = 101,856,948.41/12,402.62
6. Step 6: Final answer
   x = 8,212.53