Finding the Fourth Proportional to 9,090.90, 12,544.74 and 5,111.22

Step by Step Solution

1. Step 1: Write the proportion equation
   9,090.90 : 12,544.74 = 5,111.22 : x
2. Step 2: Convert to fraction form
   9,090.90/12,544.74 = 5,111.22/x
3. Step 3: Cross multiply
   9,090.90x = 12,544.74 × 5,111.22
4. Step 4: Simplify right side
   9,090.90x = 64,118,925.98
5. Step 5: Solve for x
   x = 64,118,925.98/9,090.90
6. Step 6: Final answer
   x = 7,053.09