Finding the Fourth Proportional to 21,920,981.71, 30,251,012.21 and 12,132,100.93

Step by Step Solution

1. Step 1: Write the proportion equation
   21,920,981.71 : 30,251,012.21 = 12,132,100.93 : x
2. Step 2: Convert to fraction form
   21,920,981.71/30,251,012.21 = 12,132,100.93/x
3. Step 3: Cross multiply
   21,920,981.71x = 30,251,012.21 × 12,132,100.93
4. Step 4: Simplify right side
   21,920,981.71x = 367,008,333,366,382.38
5. Step 5: Solve for x
   x = 367,008,333,366,382.38/21,920,981.71
6. Step 6: Final answer
   x = 16,742,331.08