Finding the Fourth Proportional to 37,156.64, 55,740.77 and 12,191.01

Step by Step Solution

1. Step 1: Write the proportion equation
   37,156.64 : 55,740.77 = 12,191.01 : x
2. Step 2: Convert to fraction form
   37,156.64/55,740.77 = 12,191.01/x
3. Step 3: Cross multiply
   37,156.64x = 55,740.77 × 12,191.01
4. Step 4: Simplify right side
   37,156.64x = 679,536,084.71
5. Step 5: Solve for x
   x = 679,536,084.71/37,156.64
6. Step 6: Final answer
   x = 18,288.42