Finding the Fourth Proportional to 9,090.28, 12,543.60 and 5,111.83

Step by Step Solution

1. Step 1: Write the proportion equation
   9,090.28 : 12,543.60 = 5,111.83 : x
2. Step 2: Convert to fraction form
   9,090.28/12,543.60 = 5,111.83/x
3. Step 3: Cross multiply
   9,090.28x = 12,543.60 × 5,111.83
4. Step 4: Simplify right side
   9,090.28x = 64,120,750.79
5. Step 5: Solve for x
   x = 64,120,750.79/9,090.28
6. Step 6: Final answer
   x = 7,053.77