Finding the Fourth Proportional to 13,978.74, 19,291.04 and 7,605.76

Step by Step Solution

1. Step 1: Write the proportion equation
   13,978.74 : 19,291.04 = 7,605.76 : x
2. Step 2: Convert to fraction form
   13,978.74/19,291.04 = 7,605.76/x
3. Step 3: Cross multiply
   13,978.74x = 19,291.04 × 7,605.76
4. Step 4: Simplify right side
   13,978.74x = 146,723,020.39
5. Step 5: Solve for x
   x = 146,723,020.39/13,978.74
6. Step 6: Final answer
   x = 10,496.15