Finding the Fourth Proportional to 13,148.88, 18,145.43 and 7,773.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,148.88 : 18,145.43 = 7,773.25 : x
2. Step 2: Convert to fraction form
   13,148.88/18,145.43 = 7,773.25/x
3. Step 3: Cross multiply
   13,148.88x = 18,145.43 × 7,773.25
4. Step 4: Simplify right side
   13,148.88x = 141,048,963.75
5. Step 5: Solve for x
   x = 141,048,963.75/13,148.88
6. Step 6: Final answer
   x = 10,727.07