Finding the Fourth Proportional to 10,428.93, 15,636.57 and 3,851.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,428.93 : 15,636.57 = 3,851.54 : x
2. Step 2: Convert to fraction form
   10,428.93/15,636.57 = 3,851.54/x
3. Step 3: Cross multiply
   10,428.93x = 15,636.57 × 3,851.54
4. Step 4: Simplify right side
   10,428.93x = 60,224,796.63
5. Step 5: Solve for x
   x = 60,224,796.63/10,428.93
6. Step 6: Final answer
   x = 5,774.78