Finding the Fourth Proportional to 9,090.63, 12,545.69 and 5,112.11

Step by Step Solution

1. Step 1: Write the proportion equation
   9,090.63 : 12,545.69 = 5,112.11 : x
2. Step 2: Convert to fraction form
   9,090.63/12,545.69 = 5,112.11/x
3. Step 3: Cross multiply
   9,090.63x = 12,545.69 × 5,112.11
4. Step 4: Simplify right side
   9,090.63x = 64,134,953.11
5. Step 5: Solve for x
   x = 64,134,953.11/9,090.63
6. Step 6: Final answer
   x = 7,055.06