Finding the Fourth Proportional to 12,370.72, 17,069.52 and 7,402.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,370.72 : 17,069.52 = 7,402.72 : x
2. Step 2: Convert to fraction form
   12,370.72/17,069.52 = 7,402.72/x
3. Step 3: Cross multiply
   12,370.72x = 17,069.52 × 7,402.72
4. Step 4: Simplify right side
   12,370.72x = 126,360,877.09
5. Step 5: Solve for x
   x = 126,360,877.09/12,370.72
6. Step 6: Final answer
   x = 10,214.51