Finding the Fourth Proportional to 14,018.61, 19,345.43 and 7,645.25

Step by Step Solution

1. Step 1: Write the proportion equation
   14,018.61 : 19,345.43 = 7,645.25 : x
2. Step 2: Convert to fraction form
   14,018.61/19,345.43 = 7,645.25/x
3. Step 3: Cross multiply
   14,018.61x = 19,345.43 × 7,645.25
4. Step 4: Simplify right side
   14,018.61x = 147,900,648.71
5. Step 5: Solve for x
   x = 147,900,648.71/14,018.61
6. Step 6: Final answer
   x = 10,550.31