Finding the Fourth Proportional to 31,492.47, 47,238.41 and 12,768.06

Step by Step Solution

1. Step 1: Write the proportion equation
   31,492.47 : 47,238.41 = 12,768.06 : x
2. Step 2: Convert to fraction form
   31,492.47/47,238.41 = 12,768.06/x
3. Step 3: Cross multiply
   31,492.47x = 47,238.41 × 12,768.06
4. Step 4: Simplify right side
   31,492.47x = 603,142,730.10
5. Step 5: Solve for x
   x = 603,142,730.10/31,492.47
6. Step 6: Final answer
   x = 19,151.97