Finding the Fourth Proportional to 12,868.56, 19,159.38 and 12,713.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,868.56 : 19,159.38 = 12,713.04 : x
2. Step 2: Convert to fraction form
   12,868.56/19,159.38 = 12,713.04/x
3. Step 3: Cross multiply
   12,868.56x = 19,159.38 × 12,713.04
4. Step 4: Simplify right side
   12,868.56x = 243,573,964.32
5. Step 5: Solve for x
   x = 243,573,964.32/12,868.56
6. Step 6: Final answer
   x = 18,927.83