Finding the Fourth Proportional to 12,667.54, 19,005.12 and 8,976.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,667.54 : 19,005.12 = 8,976.88 : x
2. Step 2: Convert to fraction form
   12,667.54/19,005.12 = 8,976.88/x
3. Step 3: Cross multiply
   12,667.54x = 19,005.12 × 8,976.88
4. Step 4: Simplify right side
   12,667.54x = 170,606,681.63
5. Step 5: Solve for x
   x = 170,606,681.63/12,667.54
6. Step 6: Final answer
   x = 13,468.02