Finding the Fourth Proportional to 21,928,925.62, 30,262,156.68 and 12,139,533.28

Step by Step Solution

1. Step 1: Write the proportion equation
   21,928,925.62 : 30,262,156.68 = 12,139,533.28 : x
2. Step 2: Convert to fraction form
   21,928,925.62/30,262,156.68 = 12,139,533.28/x
3. Step 3: Cross multiply
   21,928,925.62x = 30,262,156.68 × 12,139,533.28
4. Step 4: Simplify right side
   21,928,925.62x = 367,368,458,141,434.31
5. Step 5: Solve for x
   x = 367,368,458,141,434.31/21,928,925.62
6. Step 6: Final answer
   x = 16,752,688.41