Finding the Fourth Proportional to 13,018.60, 19,527.72 and 3,157.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,018.60 : 19,527.72 = 3,157.96 : x
2. Step 2: Convert to fraction form
   13,018.60/19,527.72 = 3,157.96/x
3. Step 3: Cross multiply
   13,018.60x = 19,527.72 × 3,157.96
4. Step 4: Simplify right side
   13,018.60x = 61,667,758.65
5. Step 5: Solve for x
   x = 61,667,758.65/13,018.60
6. Step 6: Final answer
   x = 4,736.90