Finding the Fourth Proportional to 9,134.72, 13,621.87 and 9,051.56

Step by Step Solution

1. Step 1: Write the proportion equation
   9,134.72 : 13,621.87 = 9,051.56 : x
2. Step 2: Convert to fraction form
   9,134.72/13,621.87 = 9,051.56/x
3. Step 3: Cross multiply
   9,134.72x = 13,621.87 × 9,051.56
4. Step 4: Simplify right side
   9,134.72x = 123,299,173.62
5. Step 5: Solve for x
   x = 123,299,173.62/9,134.72
6. Step 6: Final answer
   x = 13,497.86