Finding the Fourth Proportional to 9,002.14, 13,504.56 and 3,157.72

Step by Step Solution

1. Step 1: Write the proportion equation
   9,002.14 : 13,504.56 = 3,157.72 : x
2. Step 2: Convert to fraction form
   9,002.14/13,504.56 = 3,157.72/x
3. Step 3: Cross multiply
   9,002.14x = 13,504.56 × 3,157.72
4. Step 4: Simplify right side
   9,002.14x = 42,643,535.89
5. Step 5: Solve for x
   x = 42,643,535.89/9,002.14
6. Step 6: Final answer
   x = 4,737.05