Finding the Fourth Proportional to 13,713.61, 18,924.82 and 7,425.99

Step by Step Solution

1. Step 1: Write the proportion equation
   13,713.61 : 18,924.82 = 7,425.99 : x
2. Step 2: Convert to fraction form
   13,713.61/18,924.82 = 7,425.99/x
3. Step 3: Cross multiply
   13,713.61x = 18,924.82 × 7,425.99
4. Step 4: Simplify right side
   13,713.61x = 140,535,429.45
5. Step 5: Solve for x
   x = 140,535,429.45/13,713.61
6. Step 6: Final answer
   x = 10,247.88