Finding the Fourth Proportional to 12,592.72, 17,374.80 and 8,111.07

Step by Step Solution

1. Step 1: Write the proportion equation
   12,592.72 : 17,374.80 = 8,111.07 : x
2. Step 2: Convert to fraction form
   12,592.72/17,374.80 = 8,111.07/x
3. Step 3: Cross multiply
   12,592.72x = 17,374.80 × 8,111.07
4. Step 4: Simplify right side
   12,592.72x = 140,928,322.75
5. Step 5: Solve for x
   x = 140,928,322.75/12,592.72
6. Step 6: Final answer
   x = 11,191.26