Finding the Fourth Proportional to 13,019.58, 19,528.56 and 5,618.84

Step by Step Solution

1. Step 1: Write the proportion equation
   13,019.58 : 19,528.56 = 5,618.84 : x
2. Step 2: Convert to fraction form
   13,019.58/19,528.56 = 5,618.84/x
3. Step 3: Cross multiply
   13,019.58x = 19,528.56 × 5,618.84
4. Step 4: Simplify right side
   13,019.58x = 109,727,756.43
5. Step 5: Solve for x
   x = 109,727,756.43/13,019.58
6. Step 6: Final answer
   x = 8,427.90