Finding the Fourth Proportional to 9,085.89, 12,538.54 and 5,107.03

Step by Step Solution

1. Step 1: Write the proportion equation
   9,085.89 : 12,538.54 = 5,107.03 : x
2. Step 2: Convert to fraction form
   9,085.89/12,538.54 = 5,107.03/x
3. Step 3: Cross multiply
   9,085.89x = 12,538.54 × 5,107.03
4. Step 4: Simplify right side
   9,085.89x = 64,034,699.94
5. Step 5: Solve for x
   x = 64,034,699.94/9,085.89
6. Step 6: Final answer
   x = 7,047.71