Finding the Fourth Proportional to 10,445.78, 14,415.36 and 5,730.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,445.78 : 14,415.36 = 5,730.05 : x
2. Step 2: Convert to fraction form
   10,445.78/14,415.36 = 5,730.05/x
3. Step 3: Cross multiply
   10,445.78x = 14,415.36 × 5,730.05
4. Step 4: Simplify right side
   10,445.78x = 82,600,733.57
5. Step 5: Solve for x
   x = 82,600,733.57/10,445.78
6. Step 6: Final answer
   x = 7,907.57