Finding the Fourth Proportional to 21,619,807.48, 29,834,443.28 and 12,922,775.12

Step by Step Solution

1. Step 1: Write the proportion equation
   21,619,807.48 : 29,834,443.28 = 12,922,775.12 : x
2. Step 2: Convert to fraction form
   21,619,807.48/29,834,443.28 = 12,922,775.12/x
3. Step 3: Cross multiply
   21,619,807.48x = 29,834,443.28 × 12,922,775.12
4. Step 4: Simplify right side
   21,619,807.48x = 385,543,801,337,835.19
5. Step 5: Solve for x
   x = 385,543,801,337,835.19/21,619,807.48
6. Step 6: Final answer
   x = 17,832,897.06