Finding the Fourth Proportional to 9,086.61, 12,536.49 and 5,106.87

Step by Step Solution

1. Step 1: Write the proportion equation
   9,086.61 : 12,536.49 = 5,106.87 : x
2. Step 2: Convert to fraction form
   9,086.61/12,536.49 = 5,106.87/x
3. Step 3: Cross multiply
   9,086.61x = 12,536.49 × 5,106.87
4. Step 4: Simplify right side
   9,086.61x = 64,022,224.69
5. Step 5: Solve for x
   x = 64,022,224.69/9,086.61
6. Step 6: Final answer
   x = 7,045.78