Finding the Fourth Proportional to 12,875.49, 19,315.23 and 5,477.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,875.49 : 19,315.23 = 5,477.96 : x
2. Step 2: Convert to fraction form
   12,875.49/19,315.23 = 5,477.96/x
3. Step 3: Cross multiply
   12,875.49x = 19,315.23 × 5,477.96
4. Step 4: Simplify right side
   12,875.49x = 105,808,085.08
5. Step 5: Solve for x
   x = 105,808,085.08/12,875.49
6. Step 6: Final answer
   x = 8,217.79