Finding the Fourth Proportional to 13,057.77, 19,570.56 and 5,152.33

Step by Step Solution

1. Step 1: Write the proportion equation
   13,057.77 : 19,570.56 = 5,152.33 : x
2. Step 2: Convert to fraction form
   13,057.77/19,570.56 = 5,152.33/x
3. Step 3: Cross multiply
   13,057.77x = 19,570.56 × 5,152.33
4. Step 4: Simplify right side
   13,057.77x = 100,833,907.44
5. Step 5: Solve for x
   x = 100,833,907.44/13,057.77
6. Step 6: Final answer
   x = 7,722.14