Finding the Fourth Proportional to 7,155.88, 9,875.72 and 4,012.67

Step by Step Solution

1. Step 1: Write the proportion equation
   7,155.88 : 9,875.72 = 4,012.67 : x
2. Step 2: Convert to fraction form
   7,155.88/9,875.72 = 4,012.67/x
3. Step 3: Cross multiply
   7,155.88x = 9,875.72 × 4,012.67
4. Step 4: Simplify right side
   7,155.88x = 39,628,005.37
5. Step 5: Solve for x
   x = 39,628,005.37/7,155.88
6. Step 6: Final answer
   x = 5,537.82