Finding the Fourth Proportional to 19,057.56, 28,587.10 and 5,206.52

Step by Step Solution

1. Step 1: Write the proportion equation
   19,057.56 : 28,587.10 = 5,206.52 : x
2. Step 2: Convert to fraction form
   19,057.56/28,587.10 = 5,206.52/x
3. Step 3: Cross multiply
   19,057.56x = 28,587.10 × 5,206.52
4. Step 4: Simplify right side
   19,057.56x = 148,839,307.89
5. Step 5: Solve for x
   x = 148,839,307.89/19,057.56
6. Step 6: Final answer
   x = 7,809.99