Finding the Fourth Proportional to 10,525.33, 15,774.31 and 4,278.07

Step by Step Solution

1. Step 1: Write the proportion equation
   10,525.33 : 15,774.31 = 4,278.07 : x
2. Step 2: Convert to fraction form
   10,525.33/15,774.31 = 4,278.07/x
3. Step 3: Cross multiply
   10,525.33x = 15,774.31 × 4,278.07
4. Step 4: Simplify right side
   10,525.33x = 67,483,538.72
5. Step 5: Solve for x
   x = 67,483,538.72/10,525.33
6. Step 6: Final answer
   x = 6,411.54