Finding the Fourth Proportional to 12,372.20, 17,076.74 and 7,070.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,372.20 : 17,076.74 = 7,070.10 : x
2. Step 2: Convert to fraction form
   12,372.20/17,076.74 = 7,070.10/x
3. Step 3: Cross multiply
   12,372.20x = 17,076.74 × 7,070.10
4. Step 4: Simplify right side
   12,372.20x = 120,734,224.12
5. Step 5: Solve for x
   x = 120,734,224.12/12,372.20
6. Step 6: Final answer
   x = 9,758.51