Finding the Fourth Proportional to 13,972.96, 19,282.71 and 7,685.34

Step by Step Solution

1. Step 1: Write the proportion equation
   13,972.96 : 19,282.71 = 7,685.34 : x
2. Step 2: Convert to fraction form
   13,972.96/19,282.71 = 7,685.34/x
3. Step 3: Cross multiply
   13,972.96x = 19,282.71 × 7,685.34
4. Step 4: Simplify right side
   13,972.96x = 148,194,182.47
5. Step 5: Solve for x
   x = 148,194,182.47/13,972.96
6. Step 6: Final answer
   x = 10,605.78