Finding the Fourth Proportional to 14,278,725.21, 21,426,597.69 and 5,181,532.59

Step by Step Solution

1. Step 1: Write the proportion equation
   14,278,725.21 : 21,426,597.69 = 5,181,532.59 : x
2. Step 2: Convert to fraction form
   14,278,725.21/21,426,597.69 = 5,181,532.59/x
3. Step 3: Cross multiply
   14,278,725.21x = 21,426,597.69 × 5,181,532.59
4. Step 4: Simplify right side
   14,278,725.21x = 111,022,614,223,553.72
5. Step 5: Solve for x
   x = 111,022,614,223,553.72/14,278,725.21
6. Step 6: Final answer
   x = 7,775,386.99