Finding the Fourth Proportional to 10,089.05, 15,126.72 and 5,154.62

Step by Step Solution

1. Step 1: Write the proportion equation
   10,089.05 : 15,126.72 = 5,154.62 : x
2. Step 2: Convert to fraction form
   10,089.05/15,126.72 = 5,154.62/x
3. Step 3: Cross multiply
   10,089.05x = 15,126.72 × 5,154.62
4. Step 4: Simplify right side
   10,089.05x = 77,972,417.81
5. Step 5: Solve for x
   x = 77,972,417.81/10,089.05
6. Step 6: Final answer
   x = 7,728.42