Finding the Fourth Proportional to 65,964.32, 98,946.84 and 21,590.72

Step by Step Solution

1. Step 1: Write the proportion equation
   65,964.32 : 98,946.84 = 21,590.72 : x
2. Step 2: Convert to fraction form
   65,964.32/98,946.84 = 21,590.72/x
3. Step 3: Cross multiply
   65,964.32x = 98,946.84 × 21,590.72
4. Step 4: Simplify right side
   65,964.32x = 2,136,333,517.32
5. Step 5: Solve for x
   x = 2,136,333,517.32/65,964.32
6. Step 6: Final answer
   x = 32,386.20