Finding the Fourth Proportional to 34,391.32, 47,483.18 and 21,490.18

Step by Step Solution

1. Step 1: Write the proportion equation
   34,391.32 : 47,483.18 = 21,490.18 : x
2. Step 2: Convert to fraction form
   34,391.32/47,483.18 = 21,490.18/x
3. Step 3: Cross multiply
   34,391.32x = 47,483.18 × 21,490.18
4. Step 4: Simplify right side
   34,391.32x = 1,020,421,939.60
5. Step 5: Solve for x
   x = 1,020,421,939.60/34,391.32
6. Step 6: Final answer
   x = 29,670.92