Finding the Fourth Proportional to 10,390.94, 15,558.72 and 9,062.34

Step by Step Solution

1. Step 1: Write the proportion equation
   10,390.94 : 15,558.72 = 9,062.34 : x
2. Step 2: Convert to fraction form
   10,390.94/15,558.72 = 9,062.34/x
3. Step 3: Cross multiply
   10,390.94x = 15,558.72 × 9,062.34
4. Step 4: Simplify right side
   10,390.94x = 140,998,410.60
5. Step 5: Solve for x
   x = 140,998,410.60/10,390.94
6. Step 6: Final answer
   x = 13,569.36