Finding the Fourth Proportional to 21,445.79, 32,162.52 and 7,402.17

Step by Step Solution

1. Step 1: Write the proportion equation
   21,445.79 : 32,162.52 = 7,402.17 : x
2. Step 2: Convert to fraction form
   21,445.79/32,162.52 = 7,402.17/x
3. Step 3: Cross multiply
   21,445.79x = 32,162.52 × 7,402.17
4. Step 4: Simplify right side
   21,445.79x = 238,072,440.67
5. Step 5: Solve for x
   x = 238,072,440.67/21,445.79
6. Step 6: Final answer
   x = 11,101.13