Finding the Fourth Proportional to 13,856.32, 19,106.59 and 9,372.29

Step by Step Solution

1. Step 1: Write the proportion equation
   13,856.32 : 19,106.59 = 9,372.29 : x
2. Step 2: Convert to fraction form
   13,856.32/19,106.59 = 9,372.29/x
3. Step 3: Cross multiply
   13,856.32x = 19,106.59 × 9,372.29
4. Step 4: Simplify right side
   13,856.32x = 179,072,455.53
5. Step 5: Solve for x
   x = 179,072,455.53/13,856.32
6. Step 6: Final answer
   x = 12,923.53