Finding the Fourth Proportional to 8,314.93, 12,432.30 and 8,118.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,314.93 : 12,432.30 = 8,118.10 : x
2. Step 2: Convert to fraction form
   8,314.93/12,432.30 = 8,118.10/x
3. Step 3: Cross multiply
   8,314.93x = 12,432.30 × 8,118.10
4. Step 4: Simplify right side
   8,314.93x = 100,926,654.63
5. Step 5: Solve for x
   x = 100,926,654.63/8,314.93
6. Step 6: Final answer
   x = 12,138.00