Finding the Fourth Proportional to 21,369,534.72, 32,064,825.60 and 10,008,021.12

Step by Step Solution

1. Step 1: Write the proportion equation
   21,369,534.72 : 32,064,825.60 = 10,008,021.12 : x
2. Step 2: Convert to fraction form
   21,369,534.72/32,064,825.60 = 10,008,021.12/x
3. Step 3: Cross multiply
   21,369,534.72x = 32,064,825.60 × 10,008,021.12
4. Step 4: Simplify right side
   21,369,534.72x = 320,905,451,813,916.69
5. Step 5: Solve for x
   x = 320,905,451,813,916.69/21,369,534.72
6. Step 6: Final answer
   x = 15,016,960.17