Finding the Fourth Proportional to 35,878.32, 49,502.88 and 21,726

Step by Step Solution

1. Step 1: Write the proportion equation
   35,878.32 : 49,502.88 = 21,726 : x
2. Step 2: Convert to fraction form
   35,878.32/49,502.88 = 21,726/x
3. Step 3: Cross multiply
   35,878.32x = 49,502.88 × 21,726
4. Step 4: Simplify right side
   35,878.32x = 1,075,499,570.88
5. Step 5: Solve for x
   x = 1,075,499,570.88/35,878.32
6. Step 6: Final answer
   x = 29,976.31