Finding the Fourth Proportional to 21,456.07, 32,176.21 and 7,412.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,456.07 : 32,176.21 = 7,412.50 : x
2. Step 2: Convert to fraction form
   21,456.07/32,176.21 = 7,412.50/x
3. Step 3: Cross multiply
   21,456.07x = 32,176.21 × 7,412.50
4. Step 4: Simplify right side
   21,456.07x = 238,506,011.22
5. Step 5: Solve for x
   x = 238,506,011.22/21,456.07
6. Step 6: Final answer
   x = 11,116.01