Finding the Fourth Proportional to 14,555.16, 21,826.50 and 7,155

Step by Step Solution

1. Step 1: Write the proportion equation
   14,555.16 : 21,826.50 = 7,155 : x
2. Step 2: Convert to fraction form
   14,555.16/21,826.50 = 7,155/x
3. Step 3: Cross multiply
   14,555.16x = 21,826.50 × 7,155
4. Step 4: Simplify right side
   14,555.16x = 156,168,607.50
5. Step 5: Solve for x
   x = 156,168,607.50/14,555.16
6. Step 6: Final answer
   x = 10,729.43