Finding the Fourth Proportional to 37,654.76, 56,442.74 and 12,686.18

Step by Step Solution

1. Step 1: Write the proportion equation
   37,654.76 : 56,442.74 = 12,686.18 : x
2. Step 2: Convert to fraction form
   37,654.76/56,442.74 = 12,686.18/x
3. Step 3: Cross multiply
   37,654.76x = 56,442.74 × 12,686.18
4. Step 4: Simplify right side
   37,654.76x = 716,042,837.01
5. Step 5: Solve for x
   x = 716,042,837.01/37,654.76
6. Step 6: Final answer
   x = 19,016.00