Finding the Fourth Proportional to 13,989.78, 19,300.01 and 9,265.86

Step by Step Solution

1. Step 1: Write the proportion equation
   13,989.78 : 19,300.01 = 9,265.86 : x
2. Step 2: Convert to fraction form
   13,989.78/19,300.01 = 9,265.86/x
3. Step 3: Cross multiply
   13,989.78x = 19,300.01 × 9,265.86
4. Step 4: Simplify right side
   13,989.78x = 178,831,144.33
5. Step 5: Solve for x
   x = 178,831,144.33/13,989.78
6. Step 6: Final answer
   x = 12,782.98