Finding the Fourth Proportional to 37,086.91, 55,613.95 and 13,385.30

Step by Step Solution

1. Step 1: Write the proportion equation
   37,086.91 : 55,613.95 = 13,385.30 : x
2. Step 2: Convert to fraction form
   37,086.91/55,613.95 = 13,385.30/x
3. Step 3: Cross multiply
   37,086.91x = 55,613.95 × 13,385.30
4. Step 4: Simplify right side
   37,086.91x = 744,409,093.40
5. Step 5: Solve for x
   x = 744,409,093.40/37,086.91
6. Step 6: Final answer
   x = 20,072.02