Finding the Fourth Proportional to 6,111.13, 8,427.10 and 5,436.81

Step by Step Solution

1. Step 1: Write the proportion equation
   6,111.13 : 8,427.10 = 5,436.81 : x
2. Step 2: Convert to fraction form
   6,111.13/8,427.10 = 5,436.81/x
3. Step 3: Cross multiply
   6,111.13x = 8,427.10 × 5,436.81
4. Step 4: Simplify right side
   6,111.13x = 45,816,541.55
5. Step 5: Solve for x
   x = 45,816,541.55/6,111.13
6. Step 6: Final answer
   x = 7,497.23