Finding the Fourth Proportional to 9,106.72, 12,567.15 and 5,127.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,106.72 : 12,567.15 = 5,127.88 : x
2. Step 2: Convert to fraction form
   9,106.72/12,567.15 = 5,127.88/x
3. Step 3: Cross multiply
   9,106.72x = 12,567.15 × 5,127.88
4. Step 4: Simplify right side
   9,106.72x = 64,442,837.14
5. Step 5: Solve for x
   x = 64,442,837.14/9,106.72
6. Step 6: Final answer
   x = 7,076.40