Finding the Fourth Proportional to 35,881.32, 49,507.02 and 21,729

Step by Step Solution

1. Step 1: Write the proportion equation
   35,881.32 : 49,507.02 = 21,729 : x
2. Step 2: Convert to fraction form
   35,881.32/49,507.02 = 21,729/x
3. Step 3: Cross multiply
   35,881.32x = 49,507.02 × 21,729
4. Step 4: Simplify right side
   35,881.32x = 1,075,738,037.58
5. Step 5: Solve for x
   x = 1,075,738,037.58/35,881.32
6. Step 6: Final answer
   x = 29,980.45