Finding the Fourth Proportional to 12,432.90, 17,155.87 and 7,397.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,432.90 : 17,155.87 = 7,397.34 : x
2. Step 2: Convert to fraction form
   12,432.90/17,155.87 = 7,397.34/x
3. Step 3: Cross multiply
   12,432.90x = 17,155.87 × 7,397.34
4. Step 4: Simplify right side
   12,432.90x = 126,907,803.39
5. Step 5: Solve for x
   x = 126,907,803.39/12,432.90
6. Step 6: Final answer
   x = 10,207.42