Finding the Fourth Proportional to 14,155.64, 19,535.22 and 7,782.72

Step by Step Solution

1. Step 1: Write the proportion equation
   14,155.64 : 19,535.22 = 7,782.72 : x
2. Step 2: Convert to fraction form
   14,155.64/19,535.22 = 7,782.72/x
3. Step 3: Cross multiply
   14,155.64x = 19,535.22 × 7,782.72
4. Step 4: Simplify right side
   14,155.64x = 152,037,147.40
5. Step 5: Solve for x
   x = 152,037,147.40/14,155.64
6. Step 6: Final answer
   x = 10,740.40