Finding the Fourth Proportional to 37,640.90, 56,466.72 and 12,335

Step by Step Solution

1. Step 1: Write the proportion equation
   37,640.90 : 56,466.72 = 12,335 : x
2. Step 2: Convert to fraction form
   37,640.90/56,466.72 = 12,335/x
3. Step 3: Cross multiply
   37,640.90x = 56,466.72 × 12,335
4. Step 4: Simplify right side
   37,640.90x = 696,516,991.20
5. Step 5: Solve for x
   x = 696,516,991.20/37,640.90
6. Step 6: Final answer
   x = 18,504.26