Finding the Fourth Proportional to 34,435.53, 47,507.31 and 21,005.73

Step by Step Solution

1. Step 1: Write the proportion equation
   34,435.53 : 47,507.31 = 21,005.73 : x
2. Step 2: Convert to fraction form
   34,435.53/47,507.31 = 21,005.73/x
3. Step 3: Cross multiply
   34,435.53x = 47,507.31 × 21,005.73
4. Step 4: Simplify right side
   34,435.53x = 997,925,726.89
5. Step 5: Solve for x
   x = 997,925,726.89/34,435.53
6. Step 6: Final answer
   x = 28,979.54