Finding the Fourth Proportional to 21,941.51, 32,915.69 and 7,146.99

Step by Step Solution

1. Step 1: Write the proportion equation
   21,941.51 : 32,915.69 = 7,146.99 : x
2. Step 2: Convert to fraction form
   21,941.51/32,915.69 = 7,146.99/x
3. Step 3: Cross multiply
   21,941.51x = 32,915.69 × 7,146.99
4. Step 4: Simplify right side
   21,941.51x = 235,248,071.54
5. Step 5: Solve for x
   x = 235,248,071.54/21,941.51
6. Step 6: Final answer
   x = 10,721.60