Finding the Fourth Proportional to 37,597.47, 56,402.55 and 12,639.93

Step by Step Solution

1. Step 1: Write the proportion equation
   37,597.47 : 56,402.55 = 12,639.93 : x
2. Step 2: Convert to fraction form
   37,597.47/56,402.55 = 12,639.93/x
3. Step 3: Cross multiply
   37,597.47x = 56,402.55 × 12,639.93
4. Step 4: Simplify right side
   37,597.47x = 712,924,283.82
5. Step 5: Solve for x
   x = 712,924,283.82/37,597.47
6. Step 6: Final answer
   x = 18,962.03