Finding the Fourth Proportional to 9,134.88, 12,606.30 and 5,156.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,134.88 : 12,606.30 = 5,156.08 : x
2. Step 2: Convert to fraction form
   9,134.88/12,606.30 = 5,156.08/x
3. Step 3: Cross multiply
   9,134.88x = 12,606.30 × 5,156.08
4. Step 4: Simplify right side
   9,134.88x = 64,999,091.30
5. Step 5: Solve for x
   x = 64,999,091.30/9,134.88
6. Step 6: Final answer
   x = 7,115.48