Finding the Fourth Proportional to 21,173,085.48, 31,761,146.27 and 8,864,662.81

Step by Step Solution

1. Step 1: Write the proportion equation
   21,173,085.48 : 31,761,146.27 = 8,864,662.81 : x
2. Step 2: Convert to fraction form
   21,173,085.48/31,761,146.27 = 8,864,662.81/x
3. Step 3: Cross multiply
   21,173,085.48x = 31,761,146.27 × 8,864,662.81
4. Step 4: Simplify right side
   21,173,085.48x = 281,551,851,939,510.19
5. Step 5: Solve for x
   x = 281,551,851,939,510.19/21,173,085.48
6. Step 6: Final answer
   x = 13,297,629.78