Finding the Fourth Proportional to 12,971, 17,900.52 and 7,670.36

Step by Step Solution

1. Step 1: Write the proportion equation
   12,971 : 17,900.52 = 7,670.36 : x
2. Step 2: Convert to fraction form
   12,971/17,900.52 = 7,670.36/x
3. Step 3: Cross multiply
   12,971x = 17,900.52 × 7,670.36
4. Step 4: Simplify right side
   12,971x = 137,303,432.59
5. Step 5: Solve for x
   x = 137,303,432.59/12,971
6. Step 6: Final answer
   x = 10,585.42