Finding the Fourth Proportional to 13,002.28, 19,506.35 and 4,118.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,002.28 : 19,506.35 = 4,118.15 : x
2. Step 2: Convert to fraction form
   13,002.28/19,506.35 = 4,118.15/x
3. Step 3: Cross multiply
   13,002.28x = 19,506.35 × 4,118.15
4. Step 4: Simplify right side
   13,002.28x = 80,329,988.02
5. Step 5: Solve for x
   x = 80,329,988.02/13,002.28
6. Step 6: Final answer
   x = 6,178.15