Finding the Fourth Proportional to 13,087.78, 19,620.06 and 4,766.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,087.78 : 19,620.06 = 4,766.25 : x
2. Step 2: Convert to fraction form
   13,087.78/19,620.06 = 4,766.25/x
3. Step 3: Cross multiply
   13,087.78x = 19,620.06 × 4,766.25
4. Step 4: Simplify right side
   13,087.78x = 93,514,056.31
5. Step 5: Solve for x
   x = 93,514,056.31/13,087.78
6. Step 6: Final answer
   x = 7,145.14