Finding the Fourth Proportional to 9,339.86, 12,889.01 and 5,090.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,339.86 : 12,889.01 = 5,090.94 : x
2. Step 2: Convert to fraction form
   9,339.86/12,889.01 = 5,090.94/x
3. Step 3: Cross multiply
   9,339.86x = 12,889.01 × 5,090.94
4. Step 4: Simplify right side
   9,339.86x = 65,617,189.30
5. Step 5: Solve for x
   x = 65,617,189.30/9,339.86
6. Step 6: Final answer
   x = 7,025.50