Finding the Fourth Proportional to 12,907.82, 17,812.97 and 7,530.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,907.82 : 17,812.97 = 7,530.10 : x
2. Step 2: Convert to fraction form
   12,907.82/17,812.97 = 7,530.10/x
3. Step 3: Cross multiply
   12,907.82x = 17,812.97 × 7,530.10
4. Step 4: Simplify right side
   12,907.82x = 134,133,445.40
5. Step 5: Solve for x
   x = 134,133,445.40/12,907.82
6. Step 6: Final answer
   x = 10,391.64