Finding the Fourth Proportional to 40,899.81, 61,382.52 and 21,184.00

Step by Step Solution

1. Step 1: Write the proportion equation
   40,899.81 : 61,382.52 = 21,184.00 : x
2. Step 2: Convert to fraction form
   40,899.81/61,382.52 = 21,184.00/x
3. Step 3: Cross multiply
   40,899.81x = 61,382.52 × 21,184.00
4. Step 4: Simplify right side
   40,899.81x = 1,300,327,612.63
5. Step 5: Solve for x
   x = 1,300,327,612.63/40,899.81
6. Step 6: Final answer
   x = 31,793.00