Finding the Fourth Proportional to 6,111.67, 8,437.89 and 4,692.64

Step by Step Solution

1. Step 1: Write the proportion equation
   6,111.67 : 8,437.89 = 4,692.64 : x
2. Step 2: Convert to fraction form
   6,111.67/8,437.89 = 4,692.64/x
3. Step 3: Cross multiply
   6,111.67x = 8,437.89 × 4,692.64
4. Step 4: Simplify right side
   6,111.67x = 39,595,980.13
5. Step 5: Solve for x
   x = 39,595,980.13/6,111.67
6. Step 6: Final answer
   x = 6,478.75