Finding the Fourth Proportional to 37,680, 56,530.08 and 13,056

Step by Step Solution

1. Step 1: Write the proportion equation
   37,680 : 56,530.08 = 13,056 : x
2. Step 2: Convert to fraction form
   37,680/56,530.08 = 13,056/x
3. Step 3: Cross multiply
   37,680x = 56,530.08 × 13,056
4. Step 4: Simplify right side
   37,680x = 738,056,724.48
5. Step 5: Solve for x
   x = 738,056,724.48/37,680
6. Step 6: Final answer
   x = 19,587.49