Finding the Fourth Proportional to 32,856.91, 45,326.73 and 21,521.50

Step by Step Solution

1. Step 1: Write the proportion equation
   32,856.91 : 45,326.73 = 21,521.50 : x
2. Step 2: Convert to fraction form
   32,856.91/45,326.73 = 21,521.50/x
3. Step 3: Cross multiply
   32,856.91x = 45,326.73 × 21,521.50
4. Step 4: Simplify right side
   32,856.91x = 975,499,219.70
5. Step 5: Solve for x
   x = 975,499,219.70/32,856.91
6. Step 6: Final answer
   x = 29,689.32