Finding the Fourth Proportional to 10,385.68, 15,579.52 and 3,810.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,385.68 : 15,579.52 = 3,810.28 : x
2. Step 2: Convert to fraction form
   10,385.68/15,579.52 = 3,810.28/x
3. Step 3: Cross multiply
   10,385.68x = 15,579.52 × 3,810.28
4. Step 4: Simplify right side
   10,385.68x = 59,362,333.47
5. Step 5: Solve for x
   x = 59,362,333.47/10,385.68
6. Step 6: Final answer
   x = 5,715.79