Finding the Fourth Proportional to 10,677,051.30, 15,978,252.15 and 9,781,256.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,677,051.30 : 15,978,252.15 = 9,781,256.10 : x
2. Step 2: Convert to fraction form
   10,677,051.30/15,978,252.15 = 9,781,256.10/x
3. Step 3: Cross multiply
   10,677,051.30x = 15,978,252.15 × 9,781,256.10
4. Step 4: Simplify right side
   10,677,051.30x = 156,287,376,309,525.62
5. Step 5: Solve for x
   x = 156,287,376,309,525.62/10,677,051.30
6. Step 6: Final answer
   x = 14,637,690.87