Finding the Fourth Proportional to 12,488.54, 18,735.60 and 4,697.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,488.54 : 18,735.60 = 4,697.42 : x
2. Step 2: Convert to fraction form
   12,488.54/18,735.60 = 4,697.42/x
3. Step 3: Cross multiply
   12,488.54x = 18,735.60 × 4,697.42
4. Step 4: Simplify right side
   12,488.54x = 88,008,982.15
5. Step 5: Solve for x
   x = 88,008,982.15/12,488.54
6. Step 6: Final answer
   x = 7,047.18