Finding the Fourth Proportional to 9,085.30, 12,537.90 and 5,106.70

Step by Step Solution

1. Step 1: Write the proportion equation
   9,085.30 : 12,537.90 = 5,106.70 : x
2. Step 2: Convert to fraction form
   9,085.30/12,537.90 = 5,106.70/x
3. Step 3: Cross multiply
   9,085.30x = 12,537.90 × 5,106.70
4. Step 4: Simplify right side
   9,085.30x = 64,027,293.93
5. Step 5: Solve for x
   x = 64,027,293.93/9,085.30
6. Step 6: Final answer
   x = 7,047.35