Finding the Fourth Proportional to 13,019.34, 19,528.82 and 3,158.70

Step by Step Solution

1. Step 1: Write the proportion equation
   13,019.34 : 19,528.82 = 3,158.70 : x
2. Step 2: Convert to fraction form
   13,019.34/19,528.82 = 3,158.70/x
3. Step 3: Cross multiply
   13,019.34x = 19,528.82 × 3,158.70
4. Step 4: Simplify right side
   13,019.34x = 61,685,683.73
5. Step 5: Solve for x
   x = 61,685,683.73/13,019.34
6. Step 6: Final answer
   x = 4,738.00