Finding the Fourth Proportional to 10,069.74, 15,109.74 and 7,127.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,069.74 : 15,109.74 = 7,127.10 : x
2. Step 2: Convert to fraction form
   10,069.74/15,109.74 = 7,127.10/x
3. Step 3: Cross multiply
   10,069.74x = 15,109.74 × 7,127.10
4. Step 4: Simplify right side
   10,069.74x = 107,688,627.95
5. Step 5: Solve for x
   x = 107,688,627.95/10,069.74
6. Step 6: Final answer
   x = 10,694.28