Finding the Fourth Proportional to 37,499.68, 56,246.64 and 12,538.72

Step by Step Solution

1. Step 1: Write the proportion equation
   37,499.68 : 56,246.64 = 12,538.72 : x
2. Step 2: Convert to fraction form
   37,499.68/56,246.64 = 12,538.72/x
3. Step 3: Cross multiply
   37,499.68x = 56,246.64 × 12,538.72
4. Step 4: Simplify right side
   37,499.68x = 705,260,869.90
5. Step 5: Solve for x
   x = 705,260,869.90/37,499.68
6. Step 6: Final answer
   x = 18,807.12