Finding the Fourth Proportional to 14,428.78, 21,640.43 and 5,066.59

Step by Step Solution

1. Step 1: Write the proportion equation
   14,428.78 : 21,640.43 = 5,066.59 : x
2. Step 2: Convert to fraction form
   14,428.78/21,640.43 = 5,066.59/x
3. Step 3: Cross multiply
   14,428.78x = 21,640.43 × 5,066.59
4. Step 4: Simplify right side
   14,428.78x = 109,643,227.67
5. Step 5: Solve for x
   x = 109,643,227.67/14,428.78
6. Step 6: Final answer
   x = 7,598.93