Finding the Fourth Proportional to 12,957.30, 19,436.04 and 5,555.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,957.30 : 19,436.04 = 5,555.52 : x
2. Step 2: Convert to fraction form
   12,957.30/19,436.04 = 5,555.52/x
3. Step 3: Cross multiply
   12,957.30x = 19,436.04 × 5,555.52
4. Step 4: Simplify right side
   12,957.30x = 107,977,308.94
5. Step 5: Solve for x
   x = 107,977,308.94/12,957.30
6. Step 6: Final answer
   x = 8,333.32