Finding the Fourth Proportional to 12,436.88, 18,654.69 and 4,645.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,436.88 : 18,654.69 = 4,645.10 : x
2. Step 2: Convert to fraction form
   12,436.88/18,654.69 = 4,645.10/x
3. Step 3: Cross multiply
   12,436.88x = 18,654.69 × 4,645.10
4. Step 4: Simplify right side
   12,436.88x = 86,652,900.52
5. Step 5: Solve for x
   x = 86,652,900.52/12,436.88
6. Step 6: Final answer
   x = 6,967.41