Finding the Fourth Proportional to 12,886.56, 19,317.50 and 8,192.03

Step by Step Solution

1. Step 1: Write the proportion equation
   12,886.56 : 19,317.50 = 8,192.03 : x
2. Step 2: Convert to fraction form
   12,886.56/19,317.50 = 8,192.03/x
3. Step 3: Cross multiply
   12,886.56x = 19,317.50 × 8,192.03
4. Step 4: Simplify right side
   12,886.56x = 158,249,401.98
5. Step 5: Solve for x
   x = 158,249,401.98/12,886.56
6. Step 6: Final answer
   x = 12,280.19