Finding the Fourth Proportional to 9,066.78, 12,513.42 and 6,557.00

Step by Step Solution

1. Step 1: Write the proportion equation
   9,066.78 : 12,513.42 = 6,557.00 : x
2. Step 2: Convert to fraction form
   9,066.78/12,513.42 = 6,557.00/x
3. Step 3: Cross multiply
   9,066.78x = 12,513.42 × 6,557.00
4. Step 4: Simplify right side
   9,066.78x = 82,050,432.37
5. Step 5: Solve for x
   x = 82,050,432.37/9,066.78
6. Step 6: Final answer
   x = 9,049.57