Finding the Fourth Proportional to 37,656.79, 56,483.69 and 12,696.28

Step by Step Solution

1. Step 1: Write the proportion equation
   37,656.79 : 56,483.69 = 12,696.28 : x
2. Step 2: Convert to fraction form
   37,656.79/56,483.69 = 12,696.28/x
3. Step 3: Cross multiply
   37,656.79x = 56,483.69 × 12,696.28
4. Step 4: Simplify right side
   37,656.79x = 717,132,538.98
5. Step 5: Solve for x
   x = 717,132,538.98/37,656.79
6. Step 6: Final answer
   x = 19,043.91