Finding the Fourth Proportional to 13,019.09, 19,528.46 and 3,158.45

Step by Step Solution

1. Step 1: Write the proportion equation
   13,019.09 : 19,528.46 = 3,158.45 : x
2. Step 2: Convert to fraction form
   13,019.09/19,528.46 = 3,158.45/x
3. Step 3: Cross multiply
   13,019.09x = 19,528.46 × 3,158.45
4. Step 4: Simplify right side
   13,019.09x = 61,679,551.05
5. Step 5: Solve for x
   x = 61,679,551.05/13,019.09
6. Step 6: Final answer
   x = 4,737.63