Finding the Fourth Proportional to 31,300.58, 46,962.87 and 12,586

Step by Step Solution

1. Step 1: Write the proportion equation
   31,300.58 : 46,962.87 = 12,586 : x
2. Step 2: Convert to fraction form
   31,300.58/46,962.87 = 12,586/x
3. Step 3: Cross multiply
   31,300.58x = 46,962.87 × 12,586
4. Step 4: Simplify right side
   31,300.58x = 591,074,681.82
5. Step 5: Solve for x
   x = 591,074,681.82/31,300.58
6. Step 6: Final answer
   x = 18,883.83