Finding the Fourth Proportional to 10,051, 15,074.88 and 7,120.42

Step by Step Solution

1. Step 1: Write the proportion equation
   10,051 : 15,074.88 = 7,120.42 : x
2. Step 2: Convert to fraction form
   10,051/15,074.88 = 7,120.42/x
3. Step 3: Cross multiply
   10,051x = 15,074.88 × 7,120.42
4. Step 4: Simplify right side
   10,051x = 107,339,477.05
5. Step 5: Solve for x
   x = 107,339,477.05/10,051
6. Step 6: Final answer
   x = 10,679.48