Finding the Fourth Proportional to 8,945.73, 12,345.89 and 7,623.81

Step by Step Solution

1. Step 1: Write the proportion equation
   8,945.73 : 12,345.89 = 7,623.81 : x
2. Step 2: Convert to fraction form
   8,945.73/12,345.89 = 7,623.81/x
3. Step 3: Cross multiply
   8,945.73x = 12,345.89 × 7,623.81
4. Step 4: Simplify right side
   8,945.73x = 94,122,681.52
5. Step 5: Solve for x
   x = 94,122,681.52/8,945.73
6. Step 6: Final answer
   x = 10,521.52